CA1050552A - Benzimidazole derivatives - Google Patents
Benzimidazole derivativesInfo
- Publication number
- CA1050552A CA1050552A CA226,078A CA226078A CA1050552A CA 1050552 A CA1050552 A CA 1050552A CA 226078 A CA226078 A CA 226078A CA 1050552 A CA1050552 A CA 1050552A
- Authority
- CA
- Canada
- Prior art keywords
- nitro
- formula
- carboxylic acid
- amino
- benzimidazole
- 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
- 125000003785 benzimidazolyl group Chemical class N1=C(NC2=C1C=CC=C2)* 0.000 title description 3
- 229940058303 antinematodal benzimidazole derivative Drugs 0.000 title description 2
- 150000001875 compounds Chemical class 0.000 claims abstract description 32
- 150000003839 salts Chemical class 0.000 claims abstract description 21
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 24
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 6
- -1 acyl radical Chemical class 0.000 claims description 5
- 150000004820 halides Chemical class 0.000 claims description 4
- OLEFNFXYGGTROA-UHFFFAOYSA-N 5-nitrofuran-2-carbonyl chloride Chemical compound [O-][N+](=O)C1=CC=C(C(Cl)=O)O1 OLEFNFXYGGTROA-UHFFFAOYSA-N 0.000 claims description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- KQWGXHWJMSMDJJ-UHFFFAOYSA-N cyclohexyl isocyanate Chemical compound O=C=NC1CCCCC1 KQWGXHWJMSMDJJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- DGTNSSLYPYDJGL-UHFFFAOYSA-N phenyl isocyanate Chemical compound O=C=NC1=CC=CC=C1 DGTNSSLYPYDJGL-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- NOHQUGRVHSJYMR-UHFFFAOYSA-N 1-chloro-2-isocyanatobenzene Chemical compound ClC1=CC=CC=C1N=C=O NOHQUGRVHSJYMR-UHFFFAOYSA-N 0.000 claims description 2
- OQURWGJAWSLGQG-UHFFFAOYSA-N 1-isocyanatopropane Chemical compound CCCN=C=O OQURWGJAWSLGQG-UHFFFAOYSA-N 0.000 claims description 2
- VADPYQBSAUIOES-UHFFFAOYSA-N 2-(5-nitrofuran-2-yl)-2-oxoacetic acid Chemical compound OC(=O)C(=O)C1=CC=C([N+]([O-])=O)O1 VADPYQBSAUIOES-UHFFFAOYSA-N 0.000 claims description 2
- 241000233866 Fungi Species 0.000 claims description 2
- 239000012458 free base Substances 0.000 claims description 2
- HAMGRBXTJNITHG-UHFFFAOYSA-N methyl isocyanate Chemical compound CN=C=O HAMGRBXTJNITHG-UHFFFAOYSA-N 0.000 claims description 2
- HNHVTXYLRVGMHD-UHFFFAOYSA-N n-butyl isocyanate Chemical compound CCCCN=C=O HNHVTXYLRVGMHD-UHFFFAOYSA-N 0.000 claims description 2
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims 2
- 125000005913 (C3-C6) cycloalkyl group Chemical group 0.000 claims 1
- HHIRBXHEYVDUAM-UHFFFAOYSA-N 1-chloro-3-isocyanatobenzene Chemical compound ClC1=CC=CC(N=C=O)=C1 HHIRBXHEYVDUAM-UHFFFAOYSA-N 0.000 claims 1
- BMVMKBKGIWYRGM-UHFFFAOYSA-N 2-(5-nitrofuran-2-yl)-2-oxoacetyl chloride Chemical compound [O-][N+](=O)C1=CC=C(C(=O)C(Cl)=O)O1 BMVMKBKGIWYRGM-UHFFFAOYSA-N 0.000 claims 1
- JWYUFVNJZUSCSM-UHFFFAOYSA-N 2-aminobenzimidazole Chemical compound C1=CC=C2NC(N)=NC2=C1 JWYUFVNJZUSCSM-UHFFFAOYSA-N 0.000 claims 1
- MFUVCHZWGSJKEQ-UHFFFAOYSA-N 3,4-dichlorphenylisocyanate Chemical compound ClC1=CC=C(N=C=O)C=C1Cl MFUVCHZWGSJKEQ-UHFFFAOYSA-N 0.000 claims 1
- 125000000041 C6-C10 aryl group Chemical group 0.000 claims 1
- 125000005907 alkyl ester group Chemical group 0.000 claims 1
- 239000003701 inert diluent Substances 0.000 claims 1
- 239000012948 isocyanate Substances 0.000 claims 1
- 125000000217 alkyl group Chemical group 0.000 abstract description 8
- 125000003118 aryl group Chemical group 0.000 abstract description 5
- 125000000753 cycloalkyl group Chemical group 0.000 abstract description 4
- 238000002560 therapeutic procedure Methods 0.000 abstract description 4
- 230000000855 fungicidal effect Effects 0.000 abstract description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 24
- 239000000203 mixture Substances 0.000 description 14
- 239000011541 reaction mixture Substances 0.000 description 10
- 239000013078 crystal Substances 0.000 description 8
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 239000003085 diluting agent Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 230000000361 pesticidal effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 125000004179 3-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C(Cl)=C1[H] 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 241000221198 Basidiomycota Species 0.000 description 1
- 241000219310 Beta vulgaris subsp. vulgaris Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000371644 Curvularia ravenelii Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 206010017533 Fungal infection Diseases 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical class Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- 241001459558 Monographella nivalis Species 0.000 description 1
- 208000031888 Mycoses Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001556 benzimidazoles Chemical class 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical compound BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000008298 dragée Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004495 emulsifiable concentrate Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 150000003903 lactic acid esters Chemical class 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000008194 pharmaceutical composition Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 150000003899 tartaric acid esters Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
- A61K31/415—1,2-Diazoles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/24—Benzimidazoles; Hydrogenated benzimidazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
- C07D235/30—Nitrogen atoms not forming part of a nitro radical
- C07D235/32—Benzimidazole-2-carbamic acids, unsubstituted or substituted; Esters thereof; Thio-analogues thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Medicinal Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HUTO001473 | 1974-05-02 | ||
HU74CI00001473A HU171244B (hu) | 1974-05-02 | 1974-05-02 | Sposob poluchenija novykh proizvodnykh benzimidazola i gerbicidy soderzhahhie takie soedinenija |
US05/571,763 US3978075A (en) | 1974-05-02 | 1975-04-25 | Substituted carbamoyl benzimidazole derivatives with antifungal properties |
US05/696,764 US4024269A (en) | 1974-05-02 | 1976-06-16 | Benzimidazole derivatives and fungicidal composition and method |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1050552A true CA1050552A (en) | 1979-03-13 |
Family
ID=27452001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA226,078A Expired CA1050552A (en) | 1974-05-02 | 1975-05-01 | Benzimidazole derivatives |
Country Status (9)
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4136189A (en) * | 1975-09-16 | 1979-01-23 | Chinoin Gyogyszer Es Vegyeszeti Termekek Gyara R.T. | 2-(5-nitro-furfurylidene)-amino-benzimidoles and fungicidal compositions containing the same |
DE3213509A1 (de) * | 1982-04-10 | 1983-10-20 | Basf Ag, 6700 Ludwigshafen | N-substituierte imidazol-derivate, ihre herstellung, diese enthaltende arzneimittel und ihre verwendung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1072735A (en) * | 1963-09-04 | 1967-06-21 | Smith Kline French Lab | Chemotherapeutic compositions containing substituted benzimidazoles |
US3401173A (en) * | 1966-04-05 | 1968-09-10 | Smith Kline French Lab | Heterocyclic acylaminobenzimidazoles |
US3578676A (en) * | 1968-06-21 | 1971-05-11 | Smith Kline French Lab | Benzimidazole-2-carbamates substituted on the benzene ring with an acyloxyalkyl group |
DE1812005A1 (de) * | 1968-11-30 | 1970-06-18 | Bayer Ag | omega-Cyanalkylcarbamyl-benzimidazole |
FR2046114A5 (en) * | 1970-01-30 | 1971-03-05 | Dynachim Sarl | Benzimidazole derivs anthelmintic, antifung - al bactericidal, aericidal, insecticidal, nema |
US3694455A (en) * | 1970-11-19 | 1972-09-26 | Smith Kline French Lab | Acyloxyalkyl amidobenzimidazoles |
ZA739220B (en) * | 1972-12-29 | 1975-07-30 | Syntex Inc | 5(6)-benzene ring substituted benzimidazole-2-carbamate derivatives having anthelmintic activity |
-
1975
- 1975-04-24 DE DE19752518188 patent/DE2518188A1/de not_active Withdrawn
- 1975-04-25 US US05/571,763 patent/US3978075A/en not_active Expired - Lifetime
- 1975-04-29 NL NL7505080A patent/NL7505080A/xx not_active Application Discontinuation
- 1975-04-30 FR FR7513590A patent/FR2269343B1/fr not_active Expired
- 1975-05-01 CA CA226,078A patent/CA1050552A/en not_active Expired
- 1975-05-01 JP JP50052098A patent/JPS514172A/ja active Pending
- 1975-05-01 CH CH559775A patent/CH614604A5/xx not_active IP Right Cessation
- 1975-05-02 BE BE156022A patent/BE828679A/xx not_active IP Right Cessation
- 1975-05-02 GB GB1859375A patent/GB1461239A/en not_active Expired
-
1976
- 1976-06-16 US US05/696,764 patent/US4024269A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3978075A (en) | 1976-08-31 |
NL7505080A (nl) | 1975-11-04 |
US4024269A (en) | 1977-05-17 |
FR2269343A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-11-28 |
JPS514172A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-01-14 |
DE2518188A1 (de) | 1975-11-20 |
FR2269343B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-08-17 |
GB1461239A (en) | 1977-01-13 |
CH614604A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1979-12-14 |
BE828679A (fr) | 1975-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2933502A (en) | Benzimidazolone derivatives | |
EP0044421B1 (de) | Di- und Oligo-1,2,4-triazolidin-3,5-dione und Verfahren zu ihrer Herstellung | |
US3691192A (en) | An n-trityl-imidazole | |
US2933504A (en) | Derivatives of polyalkoxycarbonyl imine | |
US4639463A (en) | Substituted phenylsulfonyloxybenzimidazolecarbamates and anthelmintic compositions | |
DE2441601C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
US3828094A (en) | Substituted ureidophenylguanidines | |
US3965107A (en) | Isothiazolopyridinones | |
DE2858737C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
US3853908A (en) | 1-amino-sulfonyl-2-aminobenzimidazoles | |
US3499085A (en) | Fungicidal 1-acyl-benzimidazoline compositions and methods of use | |
US3624091A (en) | Oxime-o-carbonic acid esters | |
US3850954A (en) | 1-acyl-3-aminosulfonyl-2-imino-benzimidazolines | |
US4053598A (en) | Preparation of 2,4-dioxo-1,2,3,4-tetrahydro-s-triazino-[1,2-a]-benzimidazoles | |
CA1050552A (en) | Benzimidazole derivatives | |
US3673210A (en) | N-({107 -cyano-alkyl)-carbamyl-benzimidazoles | |
US4191764A (en) | 5(6)-Benzene ring substituted benzimidazole-2-carbamate derivatives having anthelmintic activity | |
US3869503A (en) | Substituted amidophenylguanidines | |
US3843715A (en) | Amidophenylisothioureas | |
US3864490A (en) | N-{107 -cyano-alkyl)-carbamyl benzimidazoles used as insecticides, acaricides and ovicides | |
US4136189A (en) | 2-(5-nitro-furfurylidene)-amino-benzimidoles and fungicidal compositions containing the same | |
US3711503A (en) | Substituted carbonyl-carbamidyl-benzimidazole-2-yl-carbamic acid esters | |
US3247217A (en) | Certain benzimidazole derivatives | |
US3836569A (en) | Alkyl 4-(o-(substituted methyleneamino)phenyl)-3-thioallophanates | |
HU188074B (en) | Process for the preparation of cimetidin |