Iodine-Catalyzed Methylthiolative Annulation of 2-Alkynyl Biaryls with DMSO: A Metal-Free Approach to 9-Sulfenylphenanthrenes
作者:Nilanjana Mukherjee、Tanmay Chatterjee
DOI:10.1021/acs.joc.1c00861
日期:2021.6.4
dimethyl sulfoxide (DMSO) as the sulfur source under transition-metal-free conditions. The transformation requires only iodine in a catalytic amount and trifluoroacetic anhydride. Notably, DMSO played multiple roles such as methylthiolating reagent, oxidant, and solvent in this reaction.
开发了一种碘催化的可持续、具有成本效益和原子经济的合成方法,通过 2-炔基联芳基的亲电硫醇化环化(6 -end-dig环化)以中等至高产率合成各种有价值的硫基菲和多环杂芳烃。) 在无过渡金属的条件下使用甲基亚砜如二甲基亚砜 (DMSO) 作为硫源。该转化仅需要催化量的碘和三氟乙酸酐。值得注意的是,DMSO 在该反应中扮演着多种角色,例如甲基硫醇化试剂、氧化剂和溶剂。