Synthesis and reactivity of an efficient 1,2-dehydrocarborane precursor, phenyl[o-(trimethylsilyl)carboranyl]iodonium acetate
作者:Joonsang Jeon、Tsugio Kitamura、Byung-Woo Yoo、Sang Ook Kang、Jaejung Ko
DOI:10.1039/b107343e
日期:2001.10.11
The reaction of [o-(trimethylsilyl)carboranyl]lithium with IPh(OAc)2 in diethyl ether affords an efficient 1,2-dehydro-o-carborane precursor 4: the facile 2 + 4 cycloaddition of 4 with dienes in the presence of the desilylating agent is reported.
Reactions of 1,2-Dehydro-<i>o</i>-carborane with Thiophenes. Cycloadditions and an Easy Synthesis of “Benzo-<i>o</i>-carboranes”<sup>1</sup>
作者:Lisa Barnett-Thamattoor、Guo-xiu Zheng、Douglas M. Ho、Maitland Jones、James E. Jackson
DOI:10.1021/ic960284h
日期:1996.1.1
both 4 + 2 and 2 + 2 cycloadducts are formed, with the 4 + 2 product dominating. The 4 + 2 adducts of the thiophenes are not stable but extrude sulfur under the reaction conditions to give "benzo-o-carboranes".