The palladium-catalyzedcross-couplingreaction of 1-aryltriazenes with aryl- and alkenyltrifluorosilanes occurs readily at room temperature to yield the corresponding biaryl and stilbene products in moderate to good yields. In contrast to the previous results for the reaction with areneboronic acids, in which an additional Lewis acid such as boron trifluoride is essential for the activation of the
An examination of the β-effect in an addition reaction with different ligands on silion
作者:Michael A. Brook、Mahmud A. Hadi、Axel Neuy
DOI:10.1039/c39890000957
日期:——
The degree of cis-addition of bromine to a series of β-silylstyrenes may be used to compare the ability of silicon atoms bearing a variety of differentligands to stabilize a β-carbocation.
溴向一系列β-甲硅烷基苯乙烯的顺式加成程度可用于比较带有多种不同配体的硅原子稳定β-碳共存的能力。
Cross-coupling and carbonylative cross-coupling of organofluorosilanes with hypervalent iodonium tetrafluoroborates
The palladium-catalyzed cross-coupling and carbonylative cross-coupling of aryl-, alkenyl-, and alkynylfluorosilanes promoted by fluoride ion with hypervalent aryl-, alkenyliodonium tetrafluoroborates were achieved at room temperature under an atmospheric pressure of carbon monoxide. (C) 1997 Elsevier Science Ltd.