EP 2493847 A1 20120905 - ALTERNATIVE SYNTHESIS OF 1,1-SUBSTITUTED OLEFINS HAVING ELECTRON-WITHDRAWING SUBSTITUENTS
Title (en)
ALTERNATIVE SYNTHESIS OF 1,1-SUBSTITUTED OLEFINS HAVING ELECTRON-WITHDRAWING SUBSTITUENTS
Title (de)
ALTERNATIVE SYNTHESE VON 1,1-SUBSTITUIERTEN OLEFINEN MIT ELEKTRONENZIEHENDEN SUBSTITUENTEN
Title (fr)
VARIANTE DE SYNTHÈSE D'OLÉFINES 1,1-SUBSTITUÉES, EFFECTUÉE AVEC DES SUBSTITUANTS ÉLECTRO-ATTRACTIFS
Publication
Application
Priority
- DE 102009046131 A 20091029
- EP 2010059153 W 20100628
Abstract (en)
[origin: WO2011051001A1] The present invention relates to a three-stage method for synthesizing 1,1-disubstituted olefins, comprising: in a first step, reacting a 1,3-diene with an olefin of the general formula (I), formula (I), where X is an electron-withdrawing substituent and Y a hydrogen atom or a halogen atom, where X and Y are not identical, to form an unsaturated cyclic compound containing the substituents X and Y; in a second step, substituting Y by a substituent W, selected from a C1-C12 hydrocarbon radical, a C2-C12 carboxylic acid ester group, a C3-C12 alkoxycarbonylalkyl group, a C2-C12 alkanoyl group, C4-C12 cycloalkane carbonyl group or C6-C12 (hetero)arene carbonyl group, a C1-C12 hydroxyalkyl group, a C2-C12 phosphonic acid ester group, a C1-C12 sulfonyl group, a C1-C12 sulfinyl group, a C1-C12 sulfonic acid ester group, an aldehyde group, a carbamoyl group, a halogen atom and a cyan group; and in a third step, separating a 1,1-disubstituted olefin of the general formula (II), formula (II), where X and W have the above meanings.
IPC 8 full level
C07C 253/30 (2006.01); C07C 67/343 (2006.01); C07C 67/347 (2006.01); C07C 255/08 (2006.01); C07C 255/23 (2006.01)
CPC (source: EP US)
C07C 67/343 (2013.01 - EP US); C07C 67/347 (2013.01 - EP US); C07C 253/30 (2013.01 - EP US); C07C 255/08 (2013.01 - EP US); C07C 255/23 (2013.01 - EP US); C07C 2603/88 (2017.04 - EP US)
Citation (search report)
See references of WO 2011051001A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DE 102009046131 A1 20110505; CN 102574780 A 20120711; EP 2493847 A1 20120905; US 2012289734 A1 20121115; WO 2011051001 A1 20110505
DOCDB simple family (application)
DE 102009046131 A 20091029; CN 201080048018 A 20100628; EP 10728216 A 20100628; EP 2010059153 W 20100628; US 201213458664 A 20120427