Regioselective Formation of (
<i>E</i>
)‐β‐Vinylstannanes with a Topologically Controlled Molybdenum‐Based Alkyne Hydrostannation Catalyst
作者:Kyle A. Mandla、Curtis E. Moore、Arnold L. Rheingold、Joshua S. Figueroa
DOI:10.1002/anie.201802397
日期:2018.6.4
long‐standing challenge in transition‐metal‐catalyzed alkynehydrostannation. Herein, we report a well‐defined molybdenum‐based system featuring two encumbering m‐terphenyl isocyanides that reliably and efficiently delivers (E)‐β‐vinylstannanes from a range of terminal and internal alkynes with high regioselectivity. The system is particularly effective for aryl alkynes and can discriminate between alkyl chains
Copper-catalyzed α-selective hydrostannylation of alkynes for the synthesis of branched alkenylstannanes
作者:H. Yoshida、A. Shinke、Y. Kawano、K. Takaki
DOI:10.1039/c5cc02720a
日期:——
A universal system for highly α-selective hydrostannylation of terminal alkynes has been developed by use of a distannane or a silylstannane as a stannylating reagent under copper catalysis.