approach to the preparation of α-diazo-β-ketosulfones from sulfonyl chlorides is described. It involves the conversion of the sulfonyl chloride to sodium sulfinate, alkylation of the latter with α-haloketones followed by diazo transfer using the ‘sulfonyl-azide-free’ (‘SAFE’) protocol in aqueous medium. The simple and expedient method relies on readily available starting materials and provides facile
描述了一种从
磺酰氯制备α-重氮-β-酮砜的方便的一锅法。它包括将
磺酰氯转化为亚
磺酸钠,将后者用α-卤代烷烷基化,然后在
水性介质中使用“无磺酰
叠氮化物”('
SAFE')方案进行重氮转移。简单方便的方法依赖于容易获得的起始原料,并且可以轻松获得用于有机合成的各种有价值的重
氮试剂。