α-Diazosulphones and related compounds from the base-induced cleavage of α-diazo-β-ketosulphones
作者:D. Hodson、G. Holt、D. K. Wall
DOI:10.1039/j39680002201
日期:——
sulphonylformaldehyde hydrazones (70—80%), a previously unknown class of compounds, which arose by hydrolysis of the first formed phosphazine. The acylsulphonyldiazomethanes were prepared by the action of toluene-p-sulphonyl azide and triethylamine on β-ketosulphones in 60% aqueous ethanol. If the diazoketosulphone is retained in solution and the reaction period prolonged, sulphonylformaldehyde hydrazones may be
当在干燥的甲醇中用三乙胺处理时,酰基磺酰基重氮甲烷会发生酰基裂解,从而生成α-重氮砜(约30%)。收率不佳归因于后处理过程中重氮砜的碱促进反应,因为在后处理中加入三苯基膦会生成磺酰甲醛(70-80%),这是一类以前未知的化合物,是通过水解生成首先形成磷嗪。酰基磺酰基重氮甲烷是通过甲苯-对磺酰基叠氮化物和三乙胺在60%的乙醇水溶液中对β-酮砜的作用制得的。如果重氮酮砜保留在溶液中并延长了反应时间,则可在添加三苯膦后直接分离出磺酰甲醛。