Highly Efficient Oxidation of Amines to Imines by Singlet Oxygen and Its Application in Ugi-Type Reactions
作者:Gaoxi Jiang、Jian Chen、Jie-Sheng Huang、Chi-Ming Che
DOI:10.1021/ol9018166
日期:2009.10.15
A variety of secondary benzylic amines were oxidized to imines in 90% to >99% yields by singlet oxygen generated from oxygen and a porphyrin photosensitizer. On the basis of these reactions, a protocol was developed for oxidativeUgi-typereactions with singlet oxygen as the oxidant. This protocol has been used to synthesize C1- and N-functionalized benzylic amines in up to 96% yields.