Visible-Light-Promoted Reduction of Epoxides, Hydroxysulfonates, and Halohydrines with Alkyltitanium Alkoxides
作者:Artyom Mikhaliov、Aliaksei Flerko、Dziyana Atroshchanka、Aliaksei Harakhouski、Arsenii Budko、Kirill Stasko、Andrei Bialkevich、Siarhei Shepialevich、Yahor Rusakovich、Alaksiej Hurski
DOI:10.1021/acs.orglett.3c03802
日期:2024.1.12
Alkyltitanium alkoxides generally serve as nucleophiles in reactions with carbonyl compounds and cross-coupling. Their application as reductants is known but remains underdeveloped. Here, we report that irradiation with visible light makes these organometallic compounds efficient reducing agents for the dehalogenation of 1,2- and 1,3-haloalcohols. This reaction was utilized for the reduction of epoxides
烷基钛醇盐通常在与羰基化合物的反应和交叉偶联中充当亲核试剂。它们作为还原剂的应用是已知的,但仍未得到开发。在这里,我们报告可见光照射使这些有机金属化合物成为 1,2- 和 1,3- 卤代醇脱卤的有效还原剂。该反应用于环氧化物和磺酸盐的还原,该反应通过一系列原位卤代醇形成和光化学脱卤进行。酯、酰胺、腈、炔和远程溴基团在反应条件下是稳定的。