Abstract
2H-1,4-Benzothiazin-3(4H)-ketoximes and 2H-1,4-benzoselenazin-3(4H)-ketoximes were synthesized by the reductive cyclization of bis(o-nitrophenyl) disulfides or diselenides with aromatic or aliphatic β-nitroethylenes using SmI2 in moderate to good yields under mild conditions.
Acknowledgment
We are grateful to the National Natural Science Foundation of China (Project No. 20072033) and the NSF of Zhejiang province for financial support.