title: Convenient preparation of 4-diazoisochroman-3-imines and 3-subsituted 3,5-dihydroisochromeno[3,4-d][1,2,3]triazoles.
abstract: A novel and convenient preparation of 4-diazoisochroman-3-imines through the copper(i)-catalyzed cascade reaction of (2-ethynylphenyl)-methanols with sulfonyl azides is described. The synthesized cyclical α-diazo imidates could readily react with a variety of primary amines to furnish 3-substituted 3,5-dihydroisochromeno[3,4-d][1,2,3]-triazoles under catalyst-free conditions.
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China. pinglu@zju.edu.cn orgwyg@zju.edu.cn.
authors.forename: Anni
authors.initials: A
authors.lastname: Ren
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China. pinglu@zju.edu.cn orgwyg@zju.edu.cn.
authors.forename: Ping
authors.initials: P
authors.lastname: Lu
authors.affiliation: Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China. pinglu@zju.edu.cn orgwyg@zju.edu.cn.
authors.forename: Yanguang
authors.identifier: http://orcid.org/0000-0002-5096-7450
authors.initials: Y
authors.lastname: Wang