title: Transition-metal-free three-component reaction of cyclopropenes, aldehydes and amines.
abstract: A transition-metal-free three-component reaction of cyclopropenes, aldehydes and amines is reported. The reaction is a new demonstration of formal [3+2] cycloaddition triggered by ring-opening of cyclopropenes bearing electron-withdrawing substituents. The reaction provides a unique method for the construction of cyclopentene structures.
authors: Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China. wangjb@pku.edu.cn.
authors: Hang
authors: H
authors: Zhang
authors: Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China. wangjb@pku.edu.cn.
authors: Bo
authors: B
authors: Wang
authors: Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China. wangjb@pku.edu.cn.
authors: Heng
authors: H
authors: Yi
authors: Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China. wangjb@pku.edu.cn.
authors: Tong
authors: T
authors: Sun
authors: Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China. wangjb@pku.edu.cn.
authors: Yan
authors: Y
authors: Zhang
authors: Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China. wangjb@pku.edu.cn and The State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.
authors: Jianbo
authors: J
authors: Wang