报道了铜催化下 α,β-不饱和砜的不同官能化。使用铜催化剂、磷酸烯丙酯、双(频哪醇)二硼和LiOMe实现了烯基砜的非对映选择性硼基化烯丙基化。在该方法中,将铜-硼基络合物添加到烯基砜中并随后进行烯丙基取代,使得硼烯丙基化产物具有良好的产率和优异的顺式非对映选择性。相反,更强的碱(KO t -Bu)通过消除磺酰基和硼基基团,进一步促进反应形成( E )-跳过的二烯。
Complementary Strategy for Regioselective Synthesis of Diverse β-Hydroxysulfones from Thiosulfonates
作者:Soobin Son、Pranab K. Shyam、Hyowon Park、Ilgyo Jeong、Hye-Young Jang
DOI:10.1002/ejoc.201800778
日期:2018.7.6
Regioselectivesynthesis of diverse β‐hydroxysulfones is conducted via sulfonylation; the reactions of alkenes with thiosulfonates provided 2° and 3° β‐hydroxysulfones, and the reactions of epoxides with thiosulfonates afforded 1° and 2° β‐hydroxysulfones in good yields.