TY - JOUR AU - Zhang, Xing; Du, Cong; Zhang, He; Li, Xiao-Cai; Wang, Yun-Long; Niu, Jun-Long; Song, Mao-Ping TI - Metal-Free Blue-Light-Mediated Cyclopropanation of Indoles by Aryl(diazo)acetates SN - 0039-7881 SN - 1437-210X PY - 2019 JO - Synthesis JF - Synthesis LA - EN VL - 51 IS - 04 SP - 889 EP - 898 ET - 2018/11/20 DA - 2019/02/01 KW - metal-free KW - blue light KW - cyclopropanation KW - indoles KW - diazo compounds KW - aryl(diazo)acetate AB - Blue-light-mediated cyclopropanation of indoles with aryl(diazo)acetates has been developed. The salient features of this strategy are that it is metal-free, operationally simple and atom-efficient, and that it uses an environmentally friendly energy source. In this protocol, blue light was employed as the sole energy source for the transformation. A variety of cyclopropane-fused indoline compounds was obtained in moderate to excellent yields and high diastereoselectivities under mild conditions. PB - © Georg Thieme Verlag DO - 10.1055/s-0037-1610668 UR - http://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-0037-1610668 ER -