IE47184B1 - Improvements in or relating to organic compounds - Google Patents
Improvements in or relating to organic compoundsInfo
- Publication number
- IE47184B1 IE47184B1 IE1780/78A IE178078A IE47184B1 IE 47184 B1 IE47184 B1 IE 47184B1 IE 1780/78 A IE1780/78 A IE 1780/78A IE 178078 A IE178078 A IE 178078A IE 47184 B1 IE47184 B1 IE 47184B1
- Authority
- IE
- Ireland
- Prior art keywords
- process according
- alkyl
- signifies
- quinazolinone
- substituted
- Prior art date
Links
- 150000002894 organic compounds Chemical class 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 32
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000005864 Sulphur Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 5
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 239000011777 magnesium Substances 0.000 claims abstract description 5
- 229910052976 metal sulfide Inorganic materials 0.000 claims abstract description 5
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 239000004411 aluminium Substances 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 17
- 150000002736 metal compounds Chemical class 0.000 claims description 11
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 10
- 239000000460 chlorine Substances 0.000 claims description 10
- 229910052801 chlorine Inorganic materials 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- AVRPFRMDMNDIDH-UHFFFAOYSA-N 1h-quinazolin-2-one Chemical compound C1=CC=CC2=NC(O)=NC=C21 AVRPFRMDMNDIDH-UHFFFAOYSA-N 0.000 claims description 8
- 239000007858 starting material Substances 0.000 claims description 8
- 125000001153 fluoro group Chemical group F* 0.000 claims description 7
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052794 bromium Inorganic materials 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 4
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 claims description 3
- -1 alkoxy radical Chemical class 0.000 claims description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 3
- 125000001246 bromo group Chemical group Br* 0.000 claims description 3
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 125000001316 cycloalkyl alkyl group Chemical group 0.000 claims description 2
- 125000004186 cyclopropylmethyl group Chemical group [H]C([H])(*)C1([H])C([H])([H])C1([H])[H] 0.000 claims description 2
- TYNNEEKKMHSZMO-UHFFFAOYSA-N 3,4,4a,5-tetrahydro-1h-quinazolin-2-one Chemical compound C1C=CC=C2NC(=O)NCC21 TYNNEEKKMHSZMO-UHFFFAOYSA-N 0.000 claims 4
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims 2
- DBXATJCVRRXUTC-UHFFFAOYSA-N 5,6,7,8-tetrahydro-1h-quinazolin-2-one Chemical compound C1CCCC2=NC(O)=NC=C21 DBXATJCVRRXUTC-UHFFFAOYSA-N 0.000 claims 1
- 125000003545 alkoxy group Chemical group 0.000 claims 1
- 229910052790 beryllium Inorganic materials 0.000 claims 1
- 229940121363 anti-inflammatory agent Drugs 0.000 abstract 1
- 239000002260 anti-inflammatory agent Substances 0.000 abstract 1
- 229910000000 metal hydroxide Inorganic materials 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 51
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 239000012071 phase Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 229940093499 ethyl acetate Drugs 0.000 description 5
- 235000019439 ethyl acetate Nutrition 0.000 description 5
- 239000008096 xylene Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- HFPZCAJZSCWRBC-UHFFFAOYSA-N p-cymene Chemical compound CC(C)C1=CC=C(C)C=C1 HFPZCAJZSCWRBC-UHFFFAOYSA-N 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- YADSGOSSYOOKMP-UHFFFAOYSA-N dioxolead Chemical compound O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000012485 toluene extract Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 150000003738 xylenes Chemical class 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- BNHGVULTSGNVIX-UHFFFAOYSA-N 1-(2-ethoxyethoxy)ethanol Chemical compound CCOCCOC(C)O BNHGVULTSGNVIX-UHFFFAOYSA-N 0.000 description 1
- RXPYIVMIOVRDTC-UHFFFAOYSA-N 4-phenyl-1-propan-2-ylquinazolin-2-one Chemical compound N=1C(=O)N(C(C)C)C2=CC=CC=C2C=1C1=CC=CC=C1 RXPYIVMIOVRDTC-UHFFFAOYSA-N 0.000 description 1
- YKFXBRUJMZNBAN-UHFFFAOYSA-N 7-methyl-4-phenyl-1-propan-2-yl-5,6,7,8-tetrahydroquinazolin-2-one Chemical compound N=1C(=O)N(C(C)C)C=2CC(C)CCC=2C=1C1=CC=CC=C1 YKFXBRUJMZNBAN-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical compound [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- JTIGKVIOEQASGT-UHFFFAOYSA-N proquazone Chemical compound N=1C(=O)N(C(C)C)C2=CC(C)=CC=C2C=1C1=CC=CC=C1 JTIGKVIOEQASGT-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- HCHKCACWOHOZIP-NJFSPNSNSA-N zinc-67 Chemical compound [67Zn] HCHKCACWOHOZIP-NJFSPNSNSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/70—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings condensed with carbocyclic rings or ring systems
- C07D239/72—Quinazolines; Hydrogenated quinazolines
- C07D239/78—Quinazolines; Hydrogenated quinazolines with hetero atoms directly attached in position 2
- C07D239/80—Oxygen atoms
- C07D239/82—Oxygen atoms with an aryl radical attached in position 4
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pain & Pain Management (AREA)
- Pharmacology & Pharmacy (AREA)
- Rheumatology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
A process for producing 4-aryl- quinazolin-2(1H)-ones comprises dehydrating a corresponding 4-aryl- 5,6,7,8-tetrahydro-2(1H)- quinazolinone with sulphur in an inert organic solvent, in the presence of an inorganic metal oxide, hydroxide or salt (other than of magnesium, aluminium or an alkali metal), which forms a metal sulphide under the reaction conditions. The products are known as anti- inflammatory agents.
Description
This invention relates to a process for the preparation of 4-aryl-quinazoline-2(lH)-ones, in particular a compound of formula I, in which R^ signifies a (C^-Cg) hydrocarbon radical optionally mono-, di or tri-substituted with fluoro, chloro or bromo, Rg signifies monocyclic aryl, and Rg and R^, which may be the same or different, each signifies a hydrogen atom, a (C^-Cg) alkyl or alkoxy radical, or fluorine, chlorine, bromine or trifluoromethyl, or Rg and R^ together signify 6,7methylenedioxy, by dehydrogenating a corresponding 4-aryl-5,6,7,8-tetrahydro-2(lH)-quinazolinone, in particular a compound of . 15 - 2 formula II, in which R^, , Rj and R^ are as defined above, with sulphur, in an inert organic solvent, characterised in that the dehydrogenation is effected in the presence of an inorganic metal compound which is an oxide, hydroxide or salt of a metal, other than magnesium, aluminberyllium iuniyor an alkali metal, and which forms a metal sulphide under the reaction conditions.
The process of the invention is suitably effected 10 at temperatures in the range of from 125° to 250°C, preferably 130° to 200°C and more preferably in the range 135° to 170°C.
The reaction is carried out in an organic solvent inert under the reactive conditions. Preferred solvents include ethylene glycol, propylene glycol, ethoxyethoxyethanol, dioxane, toluene, xylene and p-cymene. It is generally preferred to employ a solvent boiling at the desired reaction temperature in order to utilise reflux conditions, e.g. p-cymene under the more preferred temp20 erature conditions.
The mol ratio of sulphur to the quinazolinone starting material may vary fairly widely but is suitably at least 1.7 : 1. The upper limit is not particularly critical, but it is unnecessary and inefficient to employ the sulphur in an amount exceeding a mol ratio of 6 : 1.
More suitably, the mol ratio will be in the range of from 1.9 : 1 to 4 : 1, preferably in the range of 2 : 1 to 3 : 1.
The metal compound to be employed is, as indicated, one which forms a sulphide under the reaction conditions. In addition to the alkali metals and magnesium and aluminium, as a practical matter the rare earth metals and metals with an atomic number of 84 or greater are not preferred. Preferred metals include calcium, titanium, zirconium, chromium, lead, molybdenum, manganese, iron, tin, cobalt, nickel, palladium, copper, silver, zinc, cadmium, mercury, antimony and bismuth, more preferably calcium, iron or zinc. The metal compound may be a salt, for example a salt of a strong acid, such as a halide, e.g. chloride, sulphate or nitrate, but is preferably an oxide or hydroxide, particularly an oxide. The preferred metal compounds include calcium oxide, zinc oxide and, in particular, ferric oxide. A number of the metal compounds which may be used, e.g. calcium chloride, react vrith hydrogen sulphide to form an acidic medium and the resulting metal sulphides tend to be unstable or soluble in such medium. In such cases, it is preferred to include - 4 4 7184 in the reaction mixture a hydroxide base, e.g. an alkali metal hydroxide or alkaline earth metal hydroxide, or an excess of the metal compound when this is a hydroxide base. Preferably, an alkali metal hydroxide, e.g. potassium or sodium hydroxide, is used.
The mol ratio of metal compound to the quinazolinone starting material is suitably at least 1 : 1, preferably at least 1.5 : 1. The upper limit is not critical but mol ratios in excess of 10 : 1 offer no additional advantage.
More suitably, the mol ratio will be in the range of from 1.8 : 1 to 6 : 1, preferably 2 : 1 to 4 : 1 and more preferably in the range of from 2.1 : 1 to 3 : 1.
Where employed, the hydroxide base is conveniently present in a mol ratio relative to the quinazolinone starting material, of at least 1 : 1, suitably at least 1.5 : 1, preferably 1.8 to 6 : 1, more preferably 2 to 3 : 1 The process of the present invention may be effected under sub- or super-atmospheric pressure but is most suitably carried out under atmospheric pressure. A blanket or constant flow of a. gas, inert under the reaction conditions, e.g. nitrogen, over the reaction mixture is preferred.
The reaction may typically be run from about 1 to hours. - 5 The process of the invention results in substantially higher yields than the corresponding known process, which does not employ a metal compound, and which usually results in a mixture of the desired quinazolin-2(1H)-one and the corresponding 3,4-dihydro derivative.
The compounds II are either known per se or may be prepared from known materials by methods described in the literature.
In the compounds of the formulae I end II, the 10 (C^-Cg) hydrocarbon radical of may for example be (C^-Cg) alkyl, (Cg-C?) cycloalkyl, (C^-C^) cycloalkylalkyl, having a (Cg-Cg) oycloalkyl and a (C^-Cg) alkyl portion, phenyl, benzyl or phenethyl. Examples of halo-substituted hydrocarbon radicals for R^ include (C^-Cg) alkyl, mono-, di15 or tri-substituted by fluorine, chlorine or bromine and phenyl, benzyl or phenethyl, mono- or di-substituted by fluorine, chlorine or bromine. Di- or tri-halogen substituted radicals are preferably substituted by the same halogen atoms.
In the compounds of the formula I and II, Rg is more preferably a radical of formula III or IV, in which Y and Y^ may be the same or different, each signifies a hydrogen, fluorine, chlorine or bromine atom, a (C^-Cg) alkyl,or alkoxy radical, or a trifluoromethyl group, provided that when one of Y and Y^ signifies a trifluoromethyl group, the other signifies a hydrogen atom, and Yj signifies a hydrogen, fluorine, chlorine or bromine atom, or a (C^-Cg) alkyl or alkoxy radical.
The compounds of formula I are known for their anti-inflammatory activity and in this regard is preferably (Cy-C/) alkyl or cyclopropylmethyl, more preferably (C^-Cg) alkyl, especially isopropyl. Rg is preferably a phenyl radical optionally mono- or di-substituted as indicated above, and is more preferably phenyl or £-fluorophenyl. Rg and R^ may each be hydrogen. Preferably, however, at least one is C^g-alkyl, in particular methyl, for example in the 7-position, or C^_g-alkoxy, e.g. methoxy, for example in the 6-position.
Compounds that are most preferably prepared are 7-methyl-l-isopropyl-4-phenyl-2(IH)-quinazolinone and l-isopropyl-4-£-fluorophenyl-7-methyl-2(IH)-quinazolinone.
The following Examples illustrate the process of the invention. - 7 EXAMPLE 1: 7-Methyl-l-lsopropyl-4-phenyl-2(IH)-quinazol' inone A mixture of 200 ml of g-cymene, 40 g of ferric oxide and 7 g of sulphur is heated to reflux (ca. 175°C), and there is then added thereto dropwise over a period of 40 minutes a hot (130°C) solution of 28.2 g of 7-methyll-isopropyl-4-phenyl-5,6,7,8-tetrahydro-2(IH)-quinazolinone in 200 ml of g-cymene. The resulting solution is refluxed for 3.5 hours during which time 1.8 ml of water are collected in a Dean Stark separator. The reaction solution is then cooled to 28°C and filtered through a Celite pad which is then washed 4 times each with 25 ml of toluene. The toluene washings are extracted with 50 ml of 4N hydrochloric acid and the g-cymene filtrate is extracted with 350 ml of 4N hydrochloric acid. The acid extracts are combined and extracted with 100 ml of toluene, and such toluene extracts discarded. The acid solution remaining after such toluene extraction is treated by addition of 350 ml of toluene and 110 g of 50% aqueous sodium hydroxide solution. The phases are separated and the toluene phase washed twice each with 100 ml of water, followed by drying over sodium sulphate, filtering and evaporation in vacuo. The solid residue is crystallised from ethyl acetate to obtain 7-methyl-l25 isopropyl-4-phenyl-quinazolin-2(lH)-one, m.p. 139-141°C. - 8 EXAMPLE 2: 1-Isopropyl-4-p-fluorophenyl-7-roethyl-2(IH) quinazolinone A mixture of 67 ml of xylene, 13.3 g of ferric oxide and 2.5 g of sulphur is heated under a nitrogen atmosphere to reflux and there is then added thereto, over a period of 20 minutes dropwise, a hot (100-110°C) solution of 10 g of 7-methyl-l-isopropyl-4-£-fluoropheny1-5,6,7,8-tetrahydro-2(IH)-quinazolinone in 100 ml of xylene. The resulting solution is refluxed for 10 hours, during which time water is collected in a Dean Stark separator. The reaction mixture is then cooled to 80°C and filtered through a celite (Trademark) pad.
The filtrate and the filter cake are washed 3 times each with 50 ml of toluene. The filtrates are com15 bined and then extracted successively with 200, 100 and 50 ml of 4N hydrochloric acid. The acid extracts are combined and washed with 100 ml of toluene, the toluene extracts being discarded. To the acid solution, remaining after such toluene extraction,are added 200 ml of toluene and 115 g of 50% aqueous sodium hydroxide solution while stirring and cooling. The phases are separated and the aqueous phase washed twice each with 100 ml of toluene. - 9 The toluene phases are combined, washed twice each with 100 ml of water, followed hy drying over anhydrous magnesium sulphate, filtering through Celite and concentrating to yield 8.8 g (90%) of yellow crystals.
Recrystallisation occurs from ethylacetate to obtain the title compound with m.p. 175-176.5°C.
EXAMPLE 3; 1-Isopropy1-4-pheny1-7-methy1-2 (IH)-quinazolinone A mixture of 28.2 g of 7-methyl-l-isopropyl-4phenyl-5,6,7,8-tetrahydro-2(IH)-quinazolinone, 9.6 g of sulphur, 10 g of sodium hydroxide, 20 g of calcium (Trademark) chloride and 200 ml ofCarbitol y (2-[2-ethoxyethoxy]ethanol) is heated under a nitrogen blanket at 150°C for 2 hours.
The resulting mixture is then cooled to 65°C, 500 ml of benzene added and the mixture cooled with stirring to 15°C and the liquid phase decanted. The organic phase is washed with water and evaporated to obtain an oil which is dissolved in a mixture of 100 ml of benzene and 100 ml of 50% aqueous hydrochloric acid. The resulting mixture is stirred for one hour at room temperature, the phases separated and the acid phase treated with 50 ml of benzene. The acid phase is neutralised with 50% sodium hydroxide solution, extracted with 150 ml of benzene and the benzene extracts washed with water until neutral. After drying over sodium sulphate, the benzene solution is evaporated to obtain the - 10 crude product which is recrystallised from ethyl acetate to obtain l-isopropyl-4-phenyl-7-methyl-2(IH)-quinazolinone, m.p. 141-142°C.
EXAMPLE 4i 7-Methyl-l-isopropyl-4-(p-fluorophenyl)-quin5 azolin-2(IH)-one To a stirred mixture of 4.3 g of sulphur, 6.8 g of zinc oxide and 67 ml of a mixture of xylenes heated to reflux (ca. 138°C) under a nitrogen blanket is added a pre-heated (100-115°C) solution of 10.0 g of 7-methyl-ΙΙΟ isopropyl-4-(£-fluorophenyl)-5,6,7,8-tetrahydro-2(1H)quinazolinone in 100 ml of a mixture of xylenes. After addition (ca. 20 minutes), the resulting mixture is refluxed overnight, cooled and filtered through Celite. The solids are washed with toluene and the filtrate and washings ex15 tracted four times with 4N hydrochloric acid and the extracts washed with 100 ml of toluene. The aqueous phase is treated with 200 ml of toluene and treated portionwise with 115 g of 50% sodium hydroxide solution in an ice-bath. The agueous phase is extracted twice each with 100 ml of toluene and the organic phase water washed and dried. The crude yellcw solid obtained on filtering and concentration in vacuo is dissolved in 100 ml of ethyl acetate, filtered and concentrated to a volume of 50 ml and cooled to 0°C to 4718 - 11 obtain a precipitate which is recrystallised from ethyl acetate to yield 7-methyl-l-isopropy 1-4-(jo-f luorophenyl) quinazolin-2(IH)-one.
EXAMPLE 5; The procedure of Example 4 is repeated employing an equivalent molar amount of lead dioxide in place of zinc oxide to yield the same product.
EXAMPLE 6: In a manner analogous to any one of the preceding 10 Examples and employing appropriate starting materials in approximately equivalent amounts, the following compounds may be obtained:5,7-dimethyl-l-isopropyl-4-phenyl-quinazolin-2(IH)-one; l-isopropyl-7-methyl-4- (ja-me thy Iphenyl) -quinazolin-2 (IH) 15 one; l-isopropyl-7-methyl-4-(2-thienyl)-quinazolin-2(IH)-one; l-cyclopropylmethyl-6-methoxy-4-phenyl-guinazolin-2(IH)-one
Claims (24)
1. ' j. .-ucons for the· production c r .? 4--.·.·. ·· quinazoJin-2 (]'l)-cne by dehydrogenating a correspond!n 4-ary 1- 5,6,7,f'-: ·' --tr «hydro-2 (111) -quinazolinone wi th sv 1 !h? in an inert organic solvent, characterised in that il-c dehydrogenation is effected in the presence cf an inorganic metal compound which is an oxide, hydroxide or salt of a beryllium metal, other than magnesium, aluminium,or an alkali metal, imd which forms a metal sulphide under the reaction conditions .
2. A process for the production of a compound of formula T, R 3 R ? in which R^ signifies a (C^-Cg) hydrocarbon radical optionally mono-, di- or tri-substituted with fluoro, chloro or bromo .signifies monocyclic aryl, and Rg and R^, which may be the same or different, each signifies a hydrogen atom, a (c -Cg) alkyl or alkoxy radical, or fluorine, chlorine, bromine or trifluoromethyl, or Rg and R^ togollier signify 6,7methylenedioxy, - 13 by dehydrogenating a corresponding 5,6,7,8-tetrahydro2 (IH)-quinazolinone of the formula H, in which R^, Rj, R^ and R^ are as defined above, with sulphur, in an inert organic solvent, characterised 5 by performing the dehydrogenation in the presence of an inorganic metal compound which is an oxide, hydroxide or salt beryllium of a metal, other than magnesium, aluminium,^ or an alkali metal, and which forms a metal sulphide under the reaction conditions.
3. A process according to Claim 1 or 2, in which the dehydrogenation is carried out at a temperature of from 125-250°C, in which the mol ratio of sulphur to tetrahydroquinazolinone starting material is at least 1.7 : 1 and in to which the mol ratio of inorganic metal compound^ tetrahydroquinazolinone starting material is at least 1:1.
4. A process according to Claim 3, in which the temperature is from 130-200°C.
5. A process according to Claim 4, in which the temperature is from 135-170°C. - 14
6. A process according to any one of Claims 3 to 5, in which the mol ratio of sulphur to the tetrahydroquinazolinone starting material is from 1.9 : 1 to 4 : 1.
7. A process according to Claim 6, in which the 5 mol ratio is in the range of 2:1 to 3:1.
8. A process according to any one of Claims 3 to 7, in which the mol ratio of inorganic metal compound to the tetrahydroquinazolinone starting material is from 1.8 : 1 to 6 : 1.
9. 10 9. A process according to Claim 8, in which the ratio is from 2 : 1 to 4 : 1. 10. A process according to Claim 9, in which the ratio is from 2.1 : 1 to 3 : 1.
10. 11. A process according to any one of claims 15 2 to 10, in which the (Cg-Cg) hydrocarbon radical of Rg is (Cg-Cg) alkyl, optionally mono-, di- or tri-substituted by fluorine, chlorine or bromine, (Cg-Cy) eycloalkyl, cycloalkylalkyl, having a (Cg-Cg) eycloalkyl and a (Cg-Cg) alkyl portion, or phenyl, benzyl or phenethyl, optionally 20 mono- or di-substituted by fluorine, chlorine or bromine.
11. 12. A process according to any one of claims 2 to 11, in which Rg signifies a radical of formula III or IV, - 15 in which Y and Y may be the same or different, each signifies a hydrogen, fluorine, chlorine or bromine atom, a (Cg-Cg) alkyl or alkoxy radical, or a trifluoromethyl group, 5 provided that when one of Y and Yg signifies a trifluoromethyl group, the other signifies a hydrogen atom, and Y 2 signifies a hydrogen, fluorine, chlorine or bromine atom, or a (Cg-Cg) alkyl 10 or alkoxy radical.
12. 13. A process according to Claim 11 or 12, in which Rg is (Cg-Cg) alkyl or cyclopropylmethyl.
13. 14. A process according to Claim 13, in which Rg is (Cg-Cg) alkyl.
14. 15 15. A process according to Claim 14, in which Rg is isopropyl.
15. 16. A process according to any one of claims 2 to 15, in which Rg is phenyl, unsubstituted, mono- or di-substituted with fluoro, chloro, bromo, (Cg-Cg) alkyl or 20 alkoxy, or mono-substituted by trifluoromethyl.
16. 17. A process according to Claim 16, in which Rg is phenyl or £-fluorophenyl. - 16 in which at
17. 18. A process according to any one of claims 2 to 17,/ least one of R^ and R^ is (C^-C 3 )alkyl.
18. 19. A process according to Claim 18, in which at least one of R^ and is methyl. 5
19. 20. A process according to Claim 19, in which the 7-position is occupied by methyl.
20. 21. A process according to any one of Claims 1 to 20, for the production of 7-methyl-l-isopropyl~4-phenyl2 (lH)-quinazolinone. 10
21.
22. A process according to any one of Claims 1 to 20 for the production of l-isopropyl-4-g-fluorophenyl7-methyl-2(IH)-quinazolinone.
23. A process for the production of 4-ary1-2(1H)quinazolinone, substantially as herein described with 15 reference to any one of the Examples.
24. A 4-ary1-2(IH)-quinazolinone, whenever produced by a process according to any one of the preceding Claims,
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US83041177A | 1977-09-06 | 1977-09-06 |
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CH645362A5 (en) * | 1979-07-05 | 1984-09-28 | Sandoz Ag | METHOD FOR PRODUCING 4-PHENYL-2 (1H) -QUINAZOLINONES. |
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