IE56419B1 - Process for the preparation of 2-substituted 5-nitroso-4,6-diaminopyrimidines - Google Patents
Process for the preparation of 2-substituted 5-nitroso-4,6-diaminopyrimidinesInfo
- Publication number
- IE56419B1 IE56419B1 IE292683A IE292683A IE56419B1 IE 56419 B1 IE56419 B1 IE 56419B1 IE 292683 A IE292683 A IE 292683A IE 292683 A IE292683 A IE 292683A IE 56419 B1 IE56419 B1 IE 56419B1
- Authority
- IE
- Ireland
- Prior art keywords
- salt
- substituted
- nitroso
- nitrite
- guanidine
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- -1 2-substituted 5-nitroso-4,6-diaminopyrimidines Chemical class 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims abstract description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 150000001409 amidines Chemical class 0.000 claims abstract description 8
- 150000002826 nitrites Chemical class 0.000 claims abstract description 7
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 6
- 125000004414 alkyl thio group Chemical group 0.000 claims abstract description 5
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000003710 aryl alkyl group Chemical group 0.000 claims abstract description 4
- 125000003118 aryl group Chemical group 0.000 claims abstract description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims abstract description 3
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 18
- 150000002357 guanidines Chemical class 0.000 claims description 14
- XLQQJSWJHHKLOK-UHFFFAOYSA-N 5-nitrosopyrimidine-2,4,6-triamine Chemical compound NC1=NC(N)=C(N=O)C(N)=N1 XLQQJSWJHHKLOK-UHFFFAOYSA-N 0.000 claims description 9
- 235000010288 sodium nitrite Nutrition 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 8
- 229960000789 guanidine hydrochloride Drugs 0.000 claims description 6
- PJJJBBJSCAKJQF-UHFFFAOYSA-N guanidinium chloride Chemical compound [Cl-].NC(N)=[NH2+] PJJJBBJSCAKJQF-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 239000002585 base Substances 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 229940058936 antimalarials diaminopyrimidines Drugs 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 239000000460 chlorine Substances 0.000 claims description 2
- 229910052801 chlorine Inorganic materials 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 claims description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 abstract description 4
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 abstract description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 125000003739 carbamimidoyl group Chemical group C(N)(=N)* 0.000 abstract 1
- 125000002795 guanidino group Chemical group C(N)(=N)N* 0.000 abstract 1
- CUONGYYJJVDODC-UHFFFAOYSA-N malononitrile Chemical compound N#CCC#N CUONGYYJJVDODC-UHFFFAOYSA-N 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000000047 product Substances 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 239000011541 reaction mixture Substances 0.000 description 7
- JXPDNDHCMMOJPC-UHFFFAOYSA-N 2-hydroxybutanedinitrile Chemical compound N#CC(O)CC#N JXPDNDHCMMOJPC-UHFFFAOYSA-N 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- STIAPHVBRDNOAJ-UHFFFAOYSA-N carbamimidoylazanium;carbonate Chemical compound NC(N)=N.NC(N)=N.OC(O)=O STIAPHVBRDNOAJ-UHFFFAOYSA-N 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000006317 isomerization reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- JTTIOYHBNXDJOD-UHFFFAOYSA-N 2,4,6-triaminopyrimidine Chemical compound NC1=CC(N)=NC(N)=N1 JTTIOYHBNXDJOD-UHFFFAOYSA-N 0.000 description 2
- XOUCPTSENBHIRW-UHFFFAOYSA-N 5-nitrosopyrimidine-4,6-diamine Chemical class NC1=NC=NC(N)=C1N=O XOUCPTSENBHIRW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 2
- LZCZIHQBSCVGRD-UHFFFAOYSA-N benzenecarboximidamide;hydron;chloride Chemical compound [Cl-].NC(=[NH2+])C1=CC=CC=C1 LZCZIHQBSCVGRD-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- WCQOBLXWLRDEQA-UHFFFAOYSA-N ethanimidamide;hydrochloride Chemical compound Cl.CC(N)=N WCQOBLXWLRDEQA-UHFFFAOYSA-N 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- NNBBQNFHCVVQHZ-UHFFFAOYSA-N methyl carbamimidothioate;sulfuric acid Chemical compound CSC(N)=N.OS(O)(=O)=O NNBBQNFHCVVQHZ-UHFFFAOYSA-N 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- SMGIPPNIBFQJBW-SXOMAYOGSA-N (2s)-n-[[2-(aminomethyl)-5-chlorophenyl]methyl]-1-[(2r)-2-(benzylsulfonylamino)-3-cyclohexylpropanoyl]pyrrolidine-2-carboxamide Chemical compound NCC1=CC=C(Cl)C=C1CNC(=O)[C@H]1N(C(=O)[C@@H](CC2CCCCC2)NS(=O)(=O)CC=2C=CC=CC=2)CCC1 SMGIPPNIBFQJBW-SXOMAYOGSA-N 0.000 description 1
- OQLZINXFSUDMHM-UHFFFAOYSA-N Acetamidine Chemical class CC(N)=N OQLZINXFSUDMHM-UHFFFAOYSA-N 0.000 description 1
- FBOZXECLQNJBKD-ZDUSSCGKSA-N L-methotrexate Chemical compound C=1N=C2N=C(N)N=C(N)C2=NC=1CN(C)C1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 FBOZXECLQNJBKD-ZDUSSCGKSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- FNYLWPVRPXGIIP-UHFFFAOYSA-N Triamterene Chemical compound NC1=NC2=NC(N)=NC(N)=C2N=C1C1=CC=CC=C1 FNYLWPVRPXGIIP-UHFFFAOYSA-N 0.000 description 1
- 150000005005 aminopyrimidines Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 150000003937 benzamidines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 229960004198 guanidine Drugs 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229960000485 methotrexate Drugs 0.000 description 1
- SDDKIZNHOCEXTF-UHFFFAOYSA-N methyl carbamimidothioate Chemical class CSC(N)=N SDDKIZNHOCEXTF-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- PZRKPUQWIFJRKZ-UHFFFAOYSA-N pyrimidine-2,4,5,6-tetramine Chemical compound NC1=NC(N)=C(N)C(N)=N1 PZRKPUQWIFJRKZ-UHFFFAOYSA-N 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 229960001288 triamterene Drugs 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
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/48—Two nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/50—Three nitrogen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Pyridine Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH48283A CH660589A5 (de) | 1983-01-28 | 1983-01-28 | Verfahren zur herstellung von 2-substituierten 5-nitroso-4,6-diamino-pyrimidinen. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE832926L IE832926L (en) | 1984-07-28 |
| IE56419B1 true IE56419B1 (en) | 1991-07-31 |
Family
ID=4188010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE292683A IE56419B1 (en) | 1983-01-28 | 1983-12-12 | Process for the preparation of 2-substituted 5-nitroso-4,6-diaminopyrimidines |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0115325B1 (enrdf_load_stackoverflow) |
| JP (1) | JPS59141566A (enrdf_load_stackoverflow) |
| CA (1) | CA1241958A (enrdf_load_stackoverflow) |
| CH (1) | CH660589A5 (enrdf_load_stackoverflow) |
| DE (1) | DE3465083D1 (enrdf_load_stackoverflow) |
| DK (1) | DK159681C (enrdf_load_stackoverflow) |
| IE (1) | IE56419B1 (enrdf_load_stackoverflow) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH667089A5 (de) * | 1985-12-06 | 1988-09-15 | Lonza Ag | Verfahren zur herstellung von 2-substituierten 5-nitroso-4,6-diamino-pyrimidinen. |
| JPH02225474A (ja) * | 1989-01-04 | 1990-09-07 | Lonza Ag | ２，４―ジアミノ―６―ピペリジニル―ピリミジン―３―ｎ―オキシドの製造方法 |
| US6281358B1 (en) | 1999-04-15 | 2001-08-28 | American Cyanamid Company | Process for the preparation of substituted pyrimidines |
| ES2240093T3 (es) * | 1999-04-15 | 2005-10-16 | Basf Aktiengesellschaft | Procedimiento para la preparacion de pirimidinas substituidas. |
| DE10024886A1 (de) * | 2000-05-19 | 2001-11-22 | Henkel Kgaa | Mittel zum Färben von keratinhaltigen Fasern |
| CN119371358A (zh) * | 2024-10-22 | 2025-01-28 | 湖南吴赣药业有限公司 | 一种2,4-二氨基-6-羟基-5-亚硝基嘧啶制备方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1364734A (fr) * | 1963-05-15 | 1964-06-26 | Lumiere Lab | Procédé de préparation de dérivés acyclique et cyclique de la guanidine |
| DE2651794C2 (de) * | 1976-11-12 | 1982-09-23 | Henkel KGaA, 4000 Düsseldorf | Verfahren zur Herstellung von 5-Nitroso-2,4,6-triaminopyrimidin |
| JPS5818367A (ja) * | 1981-07-27 | 1983-02-02 | Kohjin Co Ltd | ニトロソピリミジン誘導体の製造方法 |
-
1983
- 1983-01-28 CH CH48283A patent/CH660589A5/de not_active IP Right Cessation
- 1983-12-12 IE IE292683A patent/IE56419B1/en not_active IP Right Cessation
-
1984
- 1984-01-17 DK DK19784A patent/DK159681C/da active
- 1984-01-18 CA CA000445565A patent/CA1241958A/en not_active Expired
- 1984-01-24 DE DE8484100718T patent/DE3465083D1/de not_active Expired
- 1984-01-24 EP EP84100718A patent/EP0115325B1/de not_active Expired
- 1984-01-27 JP JP1216784A patent/JPS59141566A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| EP0115325A3 (en) | 1984-09-12 |
| DK159681C (da) | 1991-04-29 |
| DK19784D0 (da) | 1984-01-17 |
| DK159681B (da) | 1990-11-19 |
| DK19784A (da) | 1984-07-29 |
| CH660589A5 (de) | 1987-05-15 |
| EP0115325A2 (de) | 1984-08-08 |
| JPS59141566A (ja) | 1984-08-14 |
| CA1241958A (en) | 1988-09-13 |
| JPH0549666B2 (enrdf_load_stackoverflow) | 1993-07-26 |
| DE3465083D1 (en) | 1987-09-03 |
| EP0115325B1 (de) | 1987-07-29 |
| IE832926L (en) | 1984-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6271376B1 (en) | Process for the preparation of N-(amino-4,6-dihalo-pyrimidine) formamides | |
| JP4525625B2 (ja) | ２，５−ジアミノ−４，６ジクロロピリミジンの製造方法 | |
| IE56419B1 (en) | Process for the preparation of 2-substituted 5-nitroso-4,6-diaminopyrimidines | |
| EP1735309B1 (en) | An improved process for the preparation of n-([1,2,4]triazolopyrimidin-2-yl)aryl sulfonamides | |
| HU195785B (en) | Process for production of 2-methil-4-amin-5-/formilamin-methil/-piramidine | |
| Richter et al. | Studies in Purine Chemistry. VIII. A Convenient Synthesis of Hypoxanthines and Adenines1, 2 | |
| SU1470175A3 (ru) | Способ получени 2,4-дихлор-5-фторбензойной кислоты | |
| AU658965B2 (en) | N-5-protected 2,5-diamino-4,6-dichloro-pyrimidines and processes for their preparation | |
| CN106496133A (zh) | 替卡格雷中间体的制备方法 | |
| US4831139A (en) | Process for the preparation of 2-substituted 5-nitroso-4,6-diaminopyrimidines | |
| CN1052226C (zh) | 2－氨基－4,6－二氯嘧啶的制备方法 | |
| CA1242198A (en) | Process for the preparation of 2-substituted-5- nitroso-4,6-diaminopyrimidines | |
| CN110218192B (zh) | 一种2-氨基-4,6-二甲氧基嘧啶的制备方法 | |
| JP3101974B2 (ja) | ４，６−ジアミノ−１，３，５−トリアジン−２−イル−安息香酸類の製法 | |
| EP0662970A1 (en) | Process for the preparation of 2-amino-6-chloropurine | |
| US4959475A (en) | Process for the production of 2,4-diamino-6-piperidinyl-pyrimidine-3-N-oxide | |
| US3505331A (en) | Process for preparing 2,4-diamino-7-chloropyrido(2,3-d)pyrimidines | |
| KR20010049867A (ko) | 4,6-디클로로-5-플루오로피리미딘의 제조방법 | |
| US3219665A (en) | 2-aryl-4,6,7-triaminopteridines | |
| HK1042078B (zh) | 生产robenidine或其衍生物的方法 | |
| US10131638B1 (en) | Synthesis of AZO intermediate | |
| US5155221A (en) | Process for the preparation of 2-alkylthio-4-hydrazino-5-fluoropyrimidines | |
| CA1133489A (en) | Preparation of 2-trifluoromethyl cinchoninic acids | |
| US4251661A (en) | Preparation of 2-trifluoromethyl cinchoninic acids | |
| SU639878A1 (ru) | Способ получени 6-амино-4-ациламидо2-меркаптопиримидинов |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Patent lapsed |