Process for the synthesis of secondary formamides
US5136094A · kind A · utility
13Cited by
5References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1988 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Mar 10, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Secondary formamides having the structural formula: EQU R.sup.1 CHR.sup.2 CH(OR.sup.3)NHCHO wherein PA1 R.sup.1 is H, C.sub.1 -C.sub.6 alkyl or aryl; PA1 R.sup.2 is H, or C.sub.1 -C.sub.6 alkyl; and PA1 R.sup.3 is benzyl, C.sub.1 -C.sub.8 alkyl or hydroxyalkyl; are synthesized by reacting an acetal having the structural formula: R.sup.1 CHR.sup.2 CH(OR.sup.3).sub.2 wherein R.sup.1, R.sup.2 and R.sup.3 are as defined above, with formamide in the presence of a strong acid catalyst at a temperature in the range of 0.degree.-200.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.