Radical cyclization of epoxyketones via a 1,5-Bun 3Sn group or a 1,5-H atom transfer
作者:Sunggak Kim、Jae Suk Koh
DOI:10.1039/c39920001377
日期:——
Radical cyclization of epoxyketones is initiated by Bun3Sn radical addition to epoxyketones, followed by epoxide fragmentation, 1,5-H- or 1,5-Bun3Sn transfer, and cyclization.
Copper-Catalyzed Stereospecific Transformations of Alkylboronic Esters
作者:Ningxin Xu、Hao Liang、James P. Morken
DOI:10.1021/jacs.2c04037
日期:2022.7.6
followed by coupling with alkynyl bromides, allyl halides, propargylic halides, β-haloenones, hydroxylamine esters, and acyl chlorides. Through this simple transformation, commercially available inexpensive compounds can be employed to convert primary and secondary alkylboronic esters to a wide array of synthetically useful compounds.