Dimethylaluminum methaneselenolate—a useful reagent for the preparation of selenoesters. A new friedel-crafts acylation procedure promoted by Cu(I)
作者:Alan P. Kozikowski、Anthony Ames
DOI:10.1016/s0040-4020(01)96721-3
日期:1985.1
The preparation of a new aluminum reagent, dmiethylaluminum methaneselenolate (Me2AlSeMe) is described. The reactivity of this aluminum reagent toward a variety of organic substrates has been studied. Me2AlSeMe will convert O-alkyl esters to selenoesters in high yield. These selenoesters function as extremely reactive acyl transfer agents and are converted to acids, esters, and amides on reaction with
描述了一种新的铝试剂,二甲基亚乙基甲烷硒酸铝(Me 2 AlSeMe)的制备。已经研究了这种铝试剂对多种有机底物的反应性。Me 2 AlSeMe将以高收率将O-烷基酯转化为硒酸酯。这些硒酸酯起极活泼的酰基转移剂的作用,并在存在亲脂性金属阳离子的情况下与水,醇或胺反应,转化为酸,酯和酰胺。此外,当使用三氟甲磺酸亚铜作为亲油性金属阳离子时,硒酸酯将酰化反应性芳烃和杂环化合物。后者的转化构成了Friedel-Crafts酰化反应的新的过渡金属促进的变体。