title: A chiral cobalt(ii) complex catalyzed asymmetric formal [3+2] cycloaddition for the synthesis of 1,2,4-triazolines.
abstract: A highly efficient catalytic asymmetric formal [3+2] cycloaddition reaction of 5-alkoxyoxazoles with azodicarboxylate compounds has been realized by a chiral N,N'-dioxide/Co(BF4)2·6H2O complex. A series of poly-substituted 1,2,4-triazolines compounds were obtained in moderate to excellent yields (70-99%) with excellent enantioselectivities (82-98% ee).
authors.affiliation: Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China. liuxh@scu.edu.cn xmfeng@scu.edu.cn.
authors.forename: Baiwei
authors.initials: B
authors.lastname: Ma
authors.affiliation: Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China. liuxh@scu.edu.cn xmfeng@scu.edu.cn.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Luo
authors.affiliation: Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China. liuxh@scu.edu.cn xmfeng@scu.edu.cn.
authors.forename: Lili
authors.initials: L
authors.lastname: Lin
authors.affiliation: Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China. liuxh@scu.edu.cn xmfeng@scu.edu.cn.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, People's Republic of China. liuxh@scu.edu.cn xmfeng@scu.edu.cn.
authors.forename: Xiaoming
authors.identifier: http://orcid.org/0000-0003-4507-0478
authors.initials: X
authors.lastname: Feng