Machiko Takano, M. Abe
Apr 8, 2022
Citations
0
Influential Citations
3
Citations
Journal
Organic letters
Abstract
7-Diethylamino-4-methyl coumarin (DEACM) derivatives are widely used as photolabile protecting groups. In this study, the photolysis of DEACM-Br with Br as the leaving group was investigated. The main reaction path was found to be the generation of radical D via homolytic C-Br bond cleavage. Interestingly, products derived from C-T, the triplet state of the carbocation intermediate (i.e., 7-(diethylamino)-4-methyl cation (C)), were identified, thereby confirming the existence of C-T for the first time.