Preparation of .alpha.-cyanocinnamaldehydes
US4172090A · kind A · utility
0Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1977 |
| Grant date | Oct 23, 1979 |
| Priority date | — |
| Expiry date | May 12, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D317/60
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Benzaldehydes are reacted with cyanoacetaldehyde, for which reaction the cyanoacetaldehyde can be produced from isoxazole in a basic medium. The reaction gives .alpha.-cyanocinnamaldehydes, the hydrogenation of which gives the corresponding dihydrocinnamyl compounds, which can be converted to 2,4-diaminopyrimidines by reaction with guanidine, using various methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.