Intramolecularly Activated Vinylsilanes: Fluoride-Free Cross-Coupling of (<i>Z</i>)-β-(Trialkylsilyl)acrylic Acids
作者:Mitsuru Shindo、Kenji Matsumoto、Kozo Shishido
DOI:10.1055/s-2004-836033
日期:——
The fluoride-free palladium-catalyzed cross-coupling reaction of trialkyl(vinyl)silanes activated by the intramolecular pentacoordination of carboxylic acid at the Z-β-position is described.
Stereoselective Nickel(II)-Catalyzed Addition of Aryl Grignards to Diphenylacetylene in the Synthesis of Zuclomiphene
作者:Avedis Karadeolian、Michael Emmett、Fabio Souza、Andrew Chung、Peter Blazecka、Richard Le Sueur、Dineshkumar Patel、Yajun Zhao、Allan Rey、Stuart Green
DOI:10.1021/acs.oprd.1c00366
日期:2022.4.15
Stereoselective synthesis of zuclomiphene was developed using nickel-catalyzed addition of 4-fluorophenylmagnesium bromide to 1,2-diphenylacetylene, followed by quenching with a chlorinating reagent. Since the aryl fluoride addition and chlorination reactions occur consecutively in one pot, the cis orientation of the two phenyl groups of 1,2-diphenylacetylene is conserved, leading to the highly selective