Nitrene equivalent mediated metal-free ring expansions of alkylidenecyclopropanes and an alkylidenecyclobutane.
The ring expansion of small-ring compounds provides a powerful method for the construction of various cyclic compounds. Herein, nitrene equivalent mediated metal-free ring expansions of alkylidenecyclopropanes (ACPs) and an alkylidenecyclobutane (ACB) were described. In this synthesis, a series of aryl-substituted cyclobutylidene and cyclopentylidene hydrazine derivatives were obtained under mild conditions in moderate to good yields. [reaction: see text]
Liang
Yong
Y
Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Beijing National Laboratory for Molecular Sciences, College of Chemistry, Peking University, Beijing 100871, China.
Jiao
Lei
L
Wang
Yuanyuan
Y
Chen
Yuanyuan
Y
Ma
Linge
L
Xu
Jiaxi
J
Zhang
Shiwei
S
Yu
Zhi-Xiang
ZX