Process of preparing aromatic aldehydes by reacting selected aromatic compounds with formamidine acetate and an organic acid anhydride
US4394314A · kind A · utility
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Key dates
| Filing date | Apr 23, 1981 |
| Grant date | Jul 19, 1983 |
| Priority date | — |
| Expiry date | Apr 23, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process of reacting a ring carbon atom of an aromatic compound Ar with a compound of the formula H.sub.2 NCH.dbd.NH.sub.2.sup.+ CH.sub.3 CO.sub.2.sup.-, and an anhydride which has the ##STR1## at from 10.degree. to 200.degree. C. and preferably 25.degree. to 40.degree. C. to form a compound of the formula ##STR2## where m is 1, 2 or 3, and A is H or F. In the case where m is 1 the compound ##STR3## can be hydrolyzed to ArCHO. Additionally, Fischers base can be reacted with formamidine acetate to form ##STR4##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.