Efficient construction of oxa- and aza-[n.2.1] skeletons: Lewis acid catalyzed intramolecular [3+2] cycloaddition of cyclopropane 1,1-diesters with carbonyls and imines.
Xing
Siyang
S
State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China.
Pan
Wenyan
W
Liu
Chang
C
Ren
Jun
J
Wang
Zhongwen
Z