Montmorillonite clay catalysis. Part 14.1 A facile synthesis of 2-substituted and 2,2-disubstituted 1,3-benzodioxoles
作者:Tong-Shuang Li、Li-Jun Li、Bo Lu、Feng Yang
DOI:10.1039/a805464i
日期:——
A series of 2-substituted and 2,2-disubstituted 1,3-benzodioxoles have been synthesised by reaction of catechol and pyrogallol with corresponding aldehydes and ketones catalysed by montmorillonite KSF or K-10. The reactions are completed within 2.7–24 h to give satisfactory yields. Ketones give better yields than aldehydes, although highly sterically hindered ketones and diaryl ketones fail to react at all.
COLE E. R.; CRANK G.; MINH H. T. H., AUSTRAL. J. CHEM., 1980, 33, NO 3, 675-680
作者:COLE E. R.、 CRANK G.、 MINH H. T. H.
DOI:——
日期:——
Microwave-assisted synthesis of 1,3-benzodioxole derivatives from catechol and ketones or aldehydes
作者:Subramanya R.K. Pingali、Branko S. Jursic
DOI:10.1016/j.tetlet.2011.03.063
日期:2011.8
An efficient synthetic procedure for the preparation of a diverse library of 1,3-benzodioxoles was developed by applying controlled microwave heating in comparison with currently available conventional heating. Reactions were completed in less than 3 h. The isolation of product is simple, the isolated yields are good to excellent, and this method is applicable to large scale production.