摘要
The copper-catalyzed methylation of coumarin by using di-tert-butyl peroxide （DTBP） has been described. The reaction provides direct access to a wide range of 3-methylcoumarins in moderate to good yields. In this procedure, it is noteworthy that DTBP was employed not only as the oxidant, but also as the methyl source.
The copper-catalyzed methylation of coumarin by using di-tert-butyl peroxide （DTBP） has been described. The reaction provides direct access to a wide range of 3-methylcoumarins in moderate to good yields. In this procedure, it is noteworthy that DTBP was employed not only as the oxidant, but also as the methyl source.
