Preparation of Unsymmetrical Ketones from Tosylhydrazones and Aromatic Aldehydes via Formyl C–H Bond Insertion
作者:Daniel M. Allwood、David C. Blakemore、Steven V. Ley
DOI:10.1021/ol5011714
日期:2014.6.6
Preparation of ketones by insertion of diazo compounds into the formyl C–H bond of an aldehyde is an attractive procedure, but use of structurally diverse diazo compounds is hampered by preparation and safety issues. A convenient procedure for the synthesis of unsymmetrical ketones from bench-stable tosylhydrazones and aryl aldehydes is reported. The procedure can be performed in one pot from the parent
通过将重氮化合物插入醛的甲酰基C–H键来制备酮是一种有吸引力的方法,但是结构多样化的重氮化合物的使用受到制备和安全性问题的阻碍。报道了一种由台式稳定的甲苯磺酰hydr和芳基醛合成不对称酮的简便方法。该过程可以在一个母体羰基化合物的罐中进行,只需要一种碱,而无需额外的促进剂。