Selective opening of nucleoside derived acetals to form highly functionalized vinyl ethers
作者:William P. Gallagher、Gregory L. Beutner、Tyler J. Wadzinski、Prashant P. Deshpande
DOI:10.1016/j.tetlet.2020.151750
日期:2020.4
rearrangement in the synthesis of a complex nucleoside, a highly functionalized, protected vinyl ether was required as a key intermediate. The optimal route to this vinyl ether was found to be a remarkably selective ring opening of a cyclic acetal with TMSOTf and NEt3. In this paper we describe factors affecting the selectivity of this vinyl ether synthesis as well as the scope of the reaction for preparation
在复杂的核苷合成中采用克莱森重排的努力中,需要高度官能化的,受保护的乙烯基醚作为关键中间体。发现该乙烯基醚的最佳途径是具有TMSOTf和NEt 3的环状乙缩醛的显着选择性开环。在本文中,我们描述了影响该乙烯基醚合成的选择性的因素以及制备高度官能化的核苷乙烯基醚的反应范围。