Visible-Light-Promoted Nickel-Catalyzed Cross-Coupling of Alkyltitanium Alkoxides with Aryl and Alkenyl Halides
作者:Andrei A. Leushukou、Anastasiya V. Krech、Alaksiej L. Hurski
DOI:10.1021/acs.orglett.2c02428
日期:2022.9.2
alkyltitanium alkoxides generated in situ from Grignard reagents and Ti(OiPr)4 undergo a photocatalyst-free nickel-catalyzed cross-coupling with organic halides upon irradiation with blue light. Mechanistic studies suggested that the reaction proceeds through radical intermediates formed by photochemical decomposition of the alkyltitanium reagents. Various aryl, heteroaryl, and vinyl halides were efficiently
在这里,我们报告了由格氏试剂和 Ti(O i Pr) 4原位生成的烷基钛醇盐在蓝光照射下与有机卤化物发生无光催化剂镍催化的交叉偶联。机理研究表明,反应通过烷基钛试剂的光化学分解形成的自由基中间体进行。各种芳基、杂芳基和乙烯基卤化物在报告的条件下被有效地烷基化,包括那些含有酯和酰胺基团的。