作者:Rainer Heck、Alistair P. Henderson、Berthold Köhler、János Rétey、Bernard T. Golding
DOI:10.1002/1099-0690(200107)2001:14<2623::aid-ejoc2623>3.0.co;2-1
日期:2001.7
Crossed acyloins were efficiently prepared by the thiazolium-catalysed condensation of two different unhindered aldehydes, using one mol equivalent of one aldehyde with three mol equivalents of the other. Conversion into the corresponding nonsymmetrical 1,2-dioxime was achieved either by oxidation with bismuth(III) oxide or the Dess−Martin periodinane to give a 1,2-diketone that was then treated with
通过噻唑鎓催化的两种不同的未受阻醛缩合,使用 1 摩尔当量的一种醛与 3 摩尔当量的另一种醛,可以有效地制备交叉 acyloins。通过用氧化铋 (III) 或 Dess-Martin periodinane 氧化得到 1,2-二酮,然后用羟胺处理得到肟,转化为相应的非对称 1,2-二肟。