作者:Craig J. Lee、Manisha Swain、Ohyun Kwon
DOI:10.1021/acs.orglett.8b02398
日期:2018.9.7
Trimethylsilylalkyne derivatives are transformed into cyclic β-silylalkenyl triflates through cationic cyclization and subsequent trapping of the alkenyl cation by a triflate anion. β-Silylcyclohexenyl triflates and 3-trimethylsilyl-1,4-dihydronaphth-2-yl triflates are generated efficiently using this methodology. These products provide ready access to substituted cyclohexynes, exemplified by a concise
三甲基甲硅烷基炔烃衍生物通过阳离子环化和随后的三氟甲磺酸酯阴离子捕集烯基阳离子而转化为环状β-甲硅烷基烯基三氟甲磺酸酯。使用此方法可有效生成β-甲硅烷基环己烯基三氟甲磺酸酯和3-三甲基甲硅烷基-1,4-二氢萘-2-基三氟甲磺酸酯。这些产品可轻松获得取代的环己炔,例如β-载脂蛋白的简明全合成。