作者:Kylee M. Aumann、Peter C. Healy、Mark J. Coster
DOI:10.1016/j.tetlet.2010.12.076
日期:2011.3
Attempts to selectively arylate [6,6]-spiroacetal enol ethers at the 2-position delivered unexpected results. Palladium-mediated arylation conditions afforded the double-Heck product, whereas reaction with benzenesulfinic acid resulted in a facile rearrangement into the corresponding 5-phenylsulfonyl-3,4,5,6-tetrahydrochromans, providing access to 5-aryl-3,4,5,6-tetrahydrochroman and hexahydrochroman
试图在2位上选择性芳基化[6,6]-螺缩醛烯醇醚提供了意想不到的结果。钯介导的芳基化条件提供了Double-Heck产物,而与苯亚磺酸的反应导致轻而易举的重排成相应的5-苯基磺酰基-3,4,5,6-四氢苯并二氢吡喃,提供了对5-芳基-3,4, 5,6-四氢苯并吡喃和六氢苯并吡喃衍生物。