Studies on 1,2,4-Thiadiazolidine Derivatives. I. The Synthesis and Structural Determination of 2,4-Disubstituted 3,5-Disubstituted Imino-1,2,4-thiadiazolidines
作者:Takeshi Kinoshita、Sadao Sato、Chihiro Tamura
DOI:10.1246/bcsj.49.2236
日期:1976.8
The reaction of symmetrical thiourea derivatives, RNHCSNHR, with benzoyl peroxide (BPO) gave only one isomer of 2,4-disubstituted 3,5-disubstituted imino-1,2,4-thiadiazolidines, and that of nonsymmetrical thiourea derivatives, RNHCSNHR′, with BPO yielded a mixture of some of the possible isomeric derivatives. The structures of these compounds were determined by means of NMR, mass spectra, and X-ray
对称硫脲衍生物 RNHCSNHR 与过氧化苯甲酰 (BPO) 的反应仅产生 2,4-二取代 3,5-二取代亚氨基-1,2,4-噻二唑烷的一种异构体,以及非对称硫脲衍生物 RNHCSNHR' 的异构体,与 BPO 产生一些可能的异构衍生物的混合物。这些化合物的结构是通过核磁共振、质谱和 X 射线分析确定的。讨论了噻二唑烷环周围基团的空间效应和一些反应机理。