Catalyst-Free Cyclopropanation of Alkenes with Diazocompounds under Microwave Irradiation
Cai Shaojun, Xiao Longqiang, Liao Liqiong, Liu Lijian
Chin. J. Org. Chem. . 2013, (12): 2602 -2606 .  DOI: 10.6023/cjoc201307030