A stereoselective synthesis of 1,6-diphenyl-1,3,5-hexatrienes utilising 4,4,6-trimethyl-2-vinyl-1,3,2-dioxaborinane as a two-carbon alkenyl building block
作者:Andrew P. Lightfoot、Steven J. R. Twiddle、Andrew Whiting
DOI:10.1039/b507900d
日期:——
geometries were stereoselectively prepared from just two starting materials: iodobenzene and 4,4,6-trimethyl-2-vinyl-1,3,2-dioxaborinane via a series of Heck, Suzuki-Miyaura and stereocontrolled iododeboronation reactions. These results demonstrate how 4,4,6-trimethyl-2-vinyl-1,3,2-dioxaborinane can be used as a genuine two-carbon vinyl-dianion building block in stereocontrolled polyene synthesis.
仅从两种起始原料:碘代苯和4,4,6-三甲基-2-乙烯基-1,3,2-二氧杂硼烷烷中立体选择性地制备了许多不同烯烃几何结构的1,6-二苯基-1,3,5-己三烯。通过一系列的Heck,Suzuki-Miyaura和立体控制的碘脱硼反应。这些结果证明了4,4,6-三甲基-2-乙烯基-1,3,2-二氧杂硼烷可以如何用作立体控制多烯合成中真正的两碳乙烯基双阴离子结构单元。