Stereoselective construction of anti - and syn -1,2-diol structures via decarbonylative radical coupling of α-alkoxyacyl tellurides
作者:Shoko Matsumura、Yuki Matsui、Masanori Nagatomo、Masayuki Inoue
DOI:10.1016/j.tet.2016.06.056
日期:2016.8
α-Alkoxyacyl tellurides derived from d-tartaric acid were utilized for stereoselective coupling reactions with electron-deficient double bonds. Treatment of the α-alkoxyacyl tellurides with Et3B/O2 or Et3B/O2/HSi(SiMe3)3 at room temperature promoted acyl radical formation and subsequent decarbonylation to form the corresponding α-alkoxy radicals, which added to various CC and CN bonds conjugated with
衍生自d-酒石酸的α-烷氧基酰基碲化物用于具有电子缺陷双键的立体选择性偶联反应。在室温下用Et 3 B / O 2或Et 3 B / O 2 / HSi(SiMe 3)3处理α-烷氧基酰基碲化物可促进酰基的形成并随后脱羰形成相应的α-烷氧基,将其添加到与吸电子基团共轭的各种C C和C N键。立体化学结果由酒石酸衍生物的保护基团定义:丙酮化物和2,3-二甲氧基丁烷-2,3-二氧基乙缩醛控制抗-和SYN -stereoselectivities,分别。