Selective Formation of Alkyl Azides Using Trimethylsilyl Azide and Carbonyl Compounds
作者:Kozaburo Nishiyama、Tomoko Yamaguchi
DOI:10.1055/s-1988-27481
日期:——
Whereas tin(II) chloride, or zinc chloride, catalyzed reaction of trimethylsilyl azide (TMSA) with carbonyl compounds gave gem-diazides 3, a catalytic amount of sodium azide/15-crown-5 promoted an addition reaction of TMSA toward these compounds to give α-siloxy azides 2 exclusively. A stereoelectronic effect was found to be important for these reactions.
氯化亚锡或
氯化锌催化的三甲基
硅基
叠氮化物(
TMSA)与碳基化合物的反应生成了gema-
叠氮化物3,而少量的
叠氮化
钠/15-crown-5促进了
TMSA与这些化合物的加成反应,独家生成了α-
硅氧
叠氮化物2。发现立体电子效应对这些反应非常重要。