作者:Jean-Francois Le Borgne
DOI:10.1016/s0022-328x(00)80603-8
日期:1976.12
Aldimines are conveniently metallated, at a position α to the functional group, by using very powerful bases i.e. activated lithium dialkylamides generated in situ from lithium and a secondary amine in benzene/hexamethylphosphoric triamide. The anions obtained are alkylated with various ω,ω′-dihalogenoalkanes to give, after aqueous acid hydrolysis, good yields of ω-halogenated aldehydes and dialdehydes
通过使用非常强大的碱,即由锂和仲胺在苯/六甲基磷三酰胺中原位生成的活化的二烷基酰胺化锂,可以方便地在官能团的位置α处将金属亚胺金属化。酸水解后,所得的阴离子用各种ω,ω'-二卤代烷烃烷基化,可得到ω-卤代醛和二醛的良好收率。