Preparation process for beta-alkoxy acrylic acid
US5744635A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1995 |
| Grant date | Apr 28, 1998 |
| Priority date | — |
| Expiry date | Oct 3, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/343
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for prerparing compounds of formula (I), wherein R is an optionally substituted alkenyl or alkynyl radical having up to 8 carbon atoms, or an optionally substituted mono- or polycyclic aryl or heteroaryl radical, and R.sub.1 and R.sub.2 are an alkyl radical having up to 4 carbon atoms. According to the method, a compound of the formula (II), wherein X is a halogen atom, is exposed to an organometallic compound of the formula (III): RZ, wherein R has the same meaning as before and Z is a metal or metal derivative. Alternatively, a compound of formula (II'), wherein Z' is a metal or metal derivative, is exposed to a compound of the formula (III'): RX', wherein X' is a nucleophilic reaction leaving group. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.