Pd0-Catalyzed carbonylation of 1,1-dichloro-1-alkenes, a new selective access to Z-α-chloroacrylates
A novel and fully chemo- and stereoselective three component strategy leading to Z-α-chloroacrylates by a Pd0-catalyzed reaction of CO (1 atm) with 1,1-dichloro-1-alkenes and various alcohols is disclosed. This catalytic approach compares favourably with the Wittig type strategies as α-chloroacrylates of pure Z configuration are obtained in high yield. The Royal Society of Chemistry.
Arthuis, Martin,Lecup, Anne,Roulland, Emmanuel
supporting information; experimental part
p. 7810 - 7812
(2010/11/18)
One-pot process in phosphonium-iodonium ylides: Nucleophilic substitution and the Wittig reaction
The nucleophilic substitution in mixed phosphonium-iodonium ylides was investigated. The iodonium group is replaced by such S-containing nucleophiles as the thiocyanate anion or thiourea, as well as by halide ions. The structure of the reaction product with the thiocyanate ion was established by X-ray diffraction. A one-pot process involving the nucleophilic substitution and the Wittig reaction was developed.
Matveeva,Podrugina,Pavlova,Mironov,Zefirov
experimental part
p. 400 - 405
(2009/06/05)
α-LITHIOALKYLPHOSPHONATES AS FUNCTIONAL GROUP CARRIERS. AN IN SITU ACRYLIC ESTER SYNTHESIS
Condensation of α-lithioalkylphosphonates with diethylcarbonate in the presence of LDA generates carbethoxyalkylphosphonate anions which upon treatment at room temperature with aldehydes constitutes an in situ acrylic ester synthesis.
Tay, M. K.,About-Jaudet, E.,Collignon, N.,Teulade, M. P.,Savignac, Ph.
p. 1349 - 1362
(2007/10/02)
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