Solvent free, dry media supported synthesis of a series of 4-aryl/heteroaryl-2-methylthio-3H-1,5-benzodiazepines by chemo- and regioselective cyclization of substituted α-oxoketene dithioacetals with o-phenylenediamines is described. The X-ray crystallographic studies confirmed the formation of the cyclized product.
描述了无溶剂的干燥介质支持的合成的4-芳基/杂芳基-2-甲硫基-3 H -1,5-苯并二氮杂卓的合成,该取代基是通过邻位苯二胺对取代的α-氧杂环丁烯二硫缩醛的化学和区域选择性环化。X射线晶体学研究证实了环化产物的形成。
Synthesis and mass spectral fragmentation of 2-methylthio-7-(<i>p</i>-R-phenyl)-8-phenoxy-4,5-benzo-3-aza-2-nonem. III
作者:E. Cortés、R. Martínez
DOI:10.1002/jhet.5570200134
日期:1983.1
have been synthesized by regiospecific cycloaddition of phenoxyacetyl on to 2-methylthio-4-(p-R-phenyl)-3H-1,5-benzodiazepines IV. The structure was established by ir, 1H-nmr and ms spectral data together with 13C-nmr spectral data of desulfurization products, VIa. Likewise, a study has been made of the fragmentation upon electron impact of IIIa and IV. All the spectra analyzed contain molecular ions and