Stannyl-cupration of Acetylenes and the Reaction of the Intermediate Cuprates with Electrophiles as a Synthesis of Substituted Vinylstannanes
Stannyl-cupration of acetylenes followed by electrophilic attack with a variety of electrophiles gives E-vinylstannanes.These can be used either to form acetylenes, thus achieving overall the addition of an ethynyl group, or to form carbon-carbon bonds in Stille reactions.
Barbero, Asuncion,Cuadrado, Purificacion,Fleming, Ian,Gonzalez, Ana M.,Pulido, Francisco J.,Rubio, Rosa
p. 1657 - 1662
(2007/10/02)
Nickel-Catalyzed Conjugate Addition of Alkynyl Groups to α,β-Unsaturated Ketones
The complex formed by reaction of Ni(acac)2 and DiBAH (1:1) catalyzes conjugate addition of dialkylaluminium acetylides to α,β enones; on hydrolysis, 3-alkynyl ketones are produced in high yield.Through this procedure conjugate addition of alkynyl groups
Schwartz, Jeffrey,Carr, Denise B.,Hansen, Robert T.,Dayrit, Fabian M.
p. 3053 - 3061
(2007/10/02)
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