Catalyst-Free Singlet Oxygen-Promoted Decarboxylative Amidation of α-Keto Acids with Free Amines
作者:Wen-Tao Xu、Bei Huang、Jian-Jun Dai、Jun Xu、Hua-Jian Xu
DOI:10.1021/acs.orglett.6b01296
日期:2016.7.1
catalyst-free decarboxylative amidation of α-keto acids with amines under mild conditions has been developed. Advantages of the new protocol include avoidance of metal catalysts and high levels of functional group tolerance. In addition, the reaction can be scaled up and shows high chemoselectivity. Preliminary mechanistic studies suggest that singlet oxygen, generated from oxygen under irradiation, is the key
已经开发了在温和条件下用胺进行的新型无催化剂的α-酮酸与胺的脱羧酰胺化反应。新协议的优点包括避免了金属催化剂和高水平的官能团耐受性。另外,该反应可以扩大规模并且显示出高的化学选择性。初步的机理研究表明,辐照下由氧气产生的单线态氧是这种无催化剂转化的关键促进剂。