CA1055491A - Process for the manufacture of benzodiazepine derivatives - Google Patents
Process for the manufacture of benzodiazepine derivativesInfo
- Publication number
- CA1055491A CA1055491A CA222,888A CA222888A CA1055491A CA 1055491 A CA1055491 A CA 1055491A CA 222888 A CA222888 A CA 222888A CA 1055491 A CA1055491 A CA 1055491A
- Authority
- CA
- Canada
- Prior art keywords
- signifies
- compound
- general formula
- formula
- defined above
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 229940053197 benzodiazepine derivative antiepileptics Drugs 0.000 title abstract description 4
- 125000003310 benzodiazepinyl group Chemical class N1N=C(C=CC2=C1C=CC=C2)* 0.000 title abstract 3
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 12
- 239000001257 hydrogen Substances 0.000 claims abstract description 12
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 7
- 150000002367 halogens Chemical class 0.000 claims abstract description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- -1 nitroacetic acid halide Chemical class 0.000 claims abstract description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 5
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 4
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 4
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims abstract description 4
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000012965 benzophenone Substances 0.000 claims abstract description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- SGHKCWXITYOJPT-UHFFFAOYSA-N 2-nitroacetyl chloride Chemical compound [O-][N+](=O)CC(Cl)=O SGHKCWXITYOJPT-UHFFFAOYSA-N 0.000 claims description 4
- 125000004429 atom Chemical group 0.000 claims description 4
- AAOVKJBEBIDNHE-UHFFFAOYSA-N diazepam Chemical compound N=1CC(=O)N(C)C2=CC=C(Cl)C=C2C=1C1=CC=CC=C1 AAOVKJBEBIDNHE-UHFFFAOYSA-N 0.000 claims description 4
- NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 238000007363 ring formation reaction Methods 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 150000001412 amines Chemical class 0.000 abstract description 4
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical class ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 abstract description 3
- 229940125681 anticonvulsant agent Drugs 0.000 abstract description 2
- 239000001961 anticonvulsive agent Substances 0.000 abstract description 2
- 229940049706 benzodiazepine Drugs 0.000 abstract description 2
- 229940035363 muscle relaxants Drugs 0.000 abstract description 2
- 239000003158 myorelaxant agent Substances 0.000 abstract description 2
- 125000005059 halophenyl group Chemical group 0.000 abstract 1
- 125000004076 pyridyl group Chemical group 0.000 abstract 1
- 229940125723 sedative agent Drugs 0.000 abstract 1
- 239000000932 sedative agent Substances 0.000 abstract 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 18
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 14
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229960000583 acetic acid Drugs 0.000 description 4
- RGHXWDVNBYKJQH-UHFFFAOYSA-N nitroacetic acid Chemical compound OC(=O)C[N+]([O-])=O RGHXWDVNBYKJQH-UHFFFAOYSA-N 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 150000001557 benzodiazepines Chemical class 0.000 description 3
- 239000012362 glacial acetic acid Substances 0.000 description 3
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- IKTOQHVNVCFSAW-UHFFFAOYSA-N N-(2-benzoyl-4-chlorophenyl)-N-methyl-2-nitroacetamide Chemical compound C(C1=CC=CC=C1)(=O)C1=C(N(C(C[N+](=O)[O-])=O)C)C=CC(=C1)Cl IKTOQHVNVCFSAW-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 235000011167 hydrochloric acid Nutrition 0.000 description 2
- 229960000443 hydrochloric acid Drugs 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 235000014786 phosphorus Nutrition 0.000 description 2
- UHZYTMXLRWXGPK-UHFFFAOYSA-N phosphorus pentachloride Chemical compound ClP(Cl)(Cl)(Cl)Cl UHZYTMXLRWXGPK-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZUWXHHBROGLWNH-UHFFFAOYSA-N (2-amino-5-chlorophenyl)-phenylmethanone Chemical compound NC1=CC=C(Cl)C=C1C(=O)C1=CC=CC=C1 ZUWXHHBROGLWNH-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- UBLHVGRGXQDARP-UHFFFAOYSA-N 6-chloro-1-methyl-3-nitro-4-phenylquinolin-2-one Chemical compound CN1C(=O)C(=C(C2=CC=CC=C2)C2=CC(Cl)=CC=C12)[N+]([O-])=O UBLHVGRGXQDARP-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- WPNMLCMTDCANOZ-UHFFFAOYSA-N [5-chloro-2-(methylamino)phenyl]-phenylmethanone Chemical compound CNC1=CC=C(Cl)C=C1C(=O)C1=CC=CC=C1 WPNMLCMTDCANOZ-UHFFFAOYSA-N 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000005917 acylation reaction Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000003931 anilides Chemical class 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- SURLGNKAQXKNSP-DBLYXWCISA-N chlorin Chemical compound C\1=C/2\N/C(=C\C3=N/C(=C\C=4NC(/C=C\5/C=CC/1=N/5)=CC=4)/C=C3)/CC\2 SURLGNKAQXKNSP-DBLYXWCISA-N 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- OHZZTXYKLXZFSZ-UHFFFAOYSA-I manganese(3+) 5,10,15-tris(1-methylpyridin-1-ium-4-yl)-20-(1-methylpyridin-4-ylidene)porphyrin-22-ide pentachloride Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Mn+3].C1=CN(C)C=CC1=C1C(C=C2)=NC2=C(C=2C=C[N+](C)=CC=2)C([N-]2)=CC=C2C(C=2C=C[N+](C)=CC=2)=C(C=C2)N=C2C(C=2C=C[N+](C)=CC=2)=C2N=C1C=C2 OHZZTXYKLXZFSZ-UHFFFAOYSA-I 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D243/00—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms
- C07D243/06—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms having the nitrogen atoms in positions 1 and 4
- C07D243/10—Heterocyclic compounds containing seven-membered rings having two nitrogen atoms as the only ring hetero atoms having the nitrogen atoms in positions 1 and 4 condensed with carbocyclic rings or ring systems
- C07D243/14—1,4-Benzodiazepines; Hydrogenated 1,4-benzodiazepines
- C07D243/16—1,4-Benzodiazepines; Hydrogenated 1,4-benzodiazepines substituted in position 5 by aryl radicals
- C07D243/18—1,4-Benzodiazepines; Hydrogenated 1,4-benzodiazepines substituted in position 5 by aryl radicals substituted in position 2 by nitrogen, oxygen or sulfur atoms
- C07D243/24—Oxygen atoms
- C07D243/28—Preparation including building-up the benzodiazepine skeleton from compounds containing no hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pyridine Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH414974A CH596173A5 (en) | 1974-03-25 | 1974-03-25 | CNS Depressant 5-aryl-benzodiazepine prepn. |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1055491A true CA1055491A (en) | 1979-05-29 |
Family
ID=4270728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA222,888A Expired CA1055491A (en) | 1974-03-25 | 1975-03-24 | Process for the manufacture of benzodiazepine derivatives |
Country Status (12)
Country | Link |
---|---|
JP (1) | JPS50130777A (cs) |
AT (1) | AT351545B (cs) |
CA (1) | CA1055491A (cs) |
CH (1) | CH596173A5 (cs) |
DD (1) | DD118644A5 (cs) |
DK (1) | DK123675A (cs) |
ES (1) | ES435935A1 (cs) |
FI (1) | FI750380A7 (cs) |
NL (1) | NL7502283A (cs) |
NO (1) | NO751008L (cs) |
SE (1) | SE7503301L (cs) |
YU (1) | YU57775A (cs) |
-
1974
- 1974-03-25 CH CH414974A patent/CH596173A5/xx not_active IP Right Cessation
-
1975
- 1975-02-12 FI FI750380A patent/FI750380A7/fi not_active Application Discontinuation
- 1975-02-26 NL NL7502283A patent/NL7502283A/xx not_active Application Discontinuation
- 1975-03-10 YU YU00577/75A patent/YU57775A/xx unknown
- 1975-03-20 JP JP50033118A patent/JPS50130777A/ja active Pending
- 1975-03-21 SE SE7503301A patent/SE7503301L/xx unknown
- 1975-03-24 CA CA222,888A patent/CA1055491A/en not_active Expired
- 1975-03-24 AT AT224775A patent/AT351545B/de not_active IP Right Cessation
- 1975-03-24 DK DK123675A patent/DK123675A/da not_active Application Discontinuation
- 1975-03-24 DD DD184989A patent/DD118644A5/xx unknown
- 1975-03-24 ES ES435935A patent/ES435935A1/es not_active Expired
- 1975-03-24 NO NO751008A patent/NO751008L/no unknown
Also Published As
Publication number | Publication date |
---|---|
AT351545B (de) | 1979-07-25 |
NO751008L (cs) | 1975-09-26 |
DK123675A (cs) | 1975-09-26 |
JPS50130777A (cs) | 1975-10-16 |
YU57775A (en) | 1982-05-31 |
NL7502283A (nl) | 1975-09-29 |
CH596173A5 (en) | 1978-02-28 |
DD118644A5 (cs) | 1976-03-12 |
ES435935A1 (es) | 1976-12-16 |
FI750380A7 (cs) | 1975-09-26 |
ATA224775A (de) | 1979-01-15 |
SE7503301L (cs) | 1975-09-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE454990B (sv) | Forbettrat forfarande for framstellning av foreningen 6,7-diklor-1,5-dihydroimidazo/2,1-b/kinazolin-2(3h)-on | |
US4118386A (en) | Synthesis of imidazo[1,5-a]diazepine-3-carboxylates | |
CA1055491A (en) | Process for the manufacture of benzodiazepine derivatives | |
US4469633A (en) | N-oxides of 5-oxo-1-phenyl-2-benzazepines | |
US3042684A (en) | J-ethtl-jj-nitrovinylindole | |
US4129739A (en) | Amidine compounds | |
US4096144A (en) | Process for preparing quinazolinone derivatives and their 2-(N-mono-substituted amino)-phenyl ketone intermediate derivatives | |
KR790000940B1 (ko) | 벤조디아제핀 유도체의 제조방법 | |
CH638517A5 (en) | Process for preparing substituted aminoquinazoline derivatives | |
US4247463A (en) | Process for the preparation of imidazobenzodiazepines | |
US4318854A (en) | Intermediates in the production of 2-benzazepines | |
CA1082199A (en) | Derivatives of indazole and the preparation thereof | |
NO132800B (cs) | ||
CA1038382A (en) | Process for the preparation of 1,4-benzodiazepine derivatives | |
SU999967A3 (ru) | Способ получени 6-N-замещенных 6-амино-3-пиридазинилгидразинов или их солей | |
US4069230A (en) | Preparation of indole derivatives | |
US4316042A (en) | Substituted carboxyalkoxyaminodihydrobenzophenones | |
IE42153B1 (en) | A process for the manufacture of benzodiazepine derivatives | |
US3901907A (en) | Process for preparing triazolobenzodiazepines | |
US3405123A (en) | Process for preparing 1, 4-benzodiazepin-2-ones | |
CA1053670A (en) | Triazolo-benzodiazepines | |
Corral et al. | Synthesis of 5‐amino‐2, 3‐dihydro‐1H‐1, 4‐benzodiazepines | |
CA1049514A (en) | Preparation for 1,4-benzodiazepines | |
US4230871A (en) | Process for preparing 5,6-dihydro-2-methyl-1,4-oxathiin derivatives | |
US4379090A (en) | Process for the preparation of 1-(phenyl and halophenyl)-3,4-dihydro-4-[(dimethylamino)methylene]5H-2-benzazepin-5-one-2-oxides |