Diastereoselective Synthesis of α,α′-Disubstituted Oxygen Heterocycles † †The authors wish to dedicate this paper to the memory of Professor Paul Dowd (1936–1996).
作者:Donald C. Craig、Gavin L. Edwards、Craig A. Muldoon
DOI:10.1016/s0040-4020(97)00274-3
日期:1997.4
Treatment of the para-toluenesulfonyl iodide adducts of a series of 1-substituted 5-hexenols with K[N(TMS)2] gave 2,6-disubstituted tetrahydropyrans with excellent cis-diastereoselectivity. The corresponding pentenols gave the 2,5-disubstituted tetrahydrofurans as 1:1 cis:trans mixtures. © 1997 Elsevier Science Ltd.
用K [N(TMS)2 ]处理一系列1-取代的5-己烯醇的对甲苯磺酰碘化物加合物,得到2,6-二取代的四氢吡喃,具有优异的顺-非对映选择性。相应的戊烯醇得到2,5-二取代的四氢呋喃,为1∶1的顺式:反式混合物。©1997爱思唯尔科学有限公司。