41448-64-0Relevant articles and documents
Visible-Light-Mediated Z -Stereoselective Monoalkylation of β,β-Dichlorostyrenes by Photoredox/Nickel Dual Catalysis
Abdellaoui, Mehdi,Millanvois, Alexandre,Levernier, Etienne,Ollivier, Cyril,Fensterbank, Louis
supporting information, p. 1513 - 1518 (2021/02/26)
Metal-catalyzed alkylation of 1,1-dihalovinyl moiety commonly suffers from both a lack of stereoselectivity and the overreaction leading to the dialkylation product. The methodology described herein features a new pathway to alkylate stereoselectively β,β-dichlorostyryl substrates to provide the Z -trisubstituted olefin only with fair to good yields. This cross-coupling reaction bears on the smooth and photoinduced formation of a C-centered radical that engages in a nickel-catalyzed organometallic cycle to form the key C sp2-C sp3bond.
Cross-coupling reactivity of 1,1-dichloroalkenes under palladium catalysis: Domino synthesis of diarylalkynes
Maddali, L. N. Rao,Meka, Suresh
supporting information, p. 4412 - 4418 (2018/03/21)
An efficient synthesis of diarylalkynes was achieved from the domino cross-coupling reaction of 1,1-dichloroalkenes with triarylbismuth reagents under palladium-catalyzed conditions. Under the established palladium protocol, 1,1-dichloroalkenes demonstrated hitherto unknown remarkable cross-coupling reactivity with organometallic triarylbismuth reagents to furnish functionalized diarylalkynes.
Ionic liquids as a reusable media for copper catalysis. Green access to alkenes using catalytic olefination reaction
Muzalevskiy, Vasily M.,Shastin, Aleksey V.,Shikhaliev, Namiq G.,Magerramov, Abel M.,Teymurova, Aytekin N.,Nenajdenko, Valentine G.
supporting information, p. 7159 - 7163 (2016/10/24)
It was demonstrated that ionic liquids are superb recyclable media for copper catalyzed reactions using catalytic olefination reaction as an example. As a result a novel green access to the halogenoalkenes was elaborated. Possibility to perform up to five reaction cycles without catalyst leaching and decreasing of the yield was demonstrated. A number of various ionic liquids was screened and 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim] [BF4]) was found the solvent with highest efficiency. Mild conditions, high atom economy comparing to other known methods, low amounts of wastes and possibility to recover ionic liquid are the advantages of the proposed method.
