Process for the preparation of fused pyridine compounds
US4818819A · kind A · utility
16Cited by
11References
18Claims
0Family size
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Key dates
| Filing date | Oct 20, 1986 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Oct 20, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D471/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2-Amino-4-hydroxy-6-[2-(4-carboxyphenyl)alk-1-en-1-yl]pyrido[2,3,-d]pyrimid ines and 2-amino-4-hydroxy-6-[2-(4-carboxyphenyl)alk-1-yn-1-yl]pyrido[2,3-d]pyrimid ines are prepared through the reaction of a haloaromatic compound and an unsaturated compound in the presence of a palladium catalyst. The products are chemical intermediates for the preparation of antineoplastic agents. A typical embodiment is the reaction of a protected 2-amino-4-hydroxy-6-ethynylpyrido[2,3-d]pyrimidine and an ester of 4-iodobenzoic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.