Reactivity of cyclic sulfamidates towards lithium acetylides: synthesis of alkynylated amines
作者:Mustafa Eskici、Abdullah Karanfil、M. Sabih Özer、Cengiz Sarıkürkcü
DOI:10.1016/j.tetlet.2011.08.171
日期:2011.11
synthetically useful level of reactivity of cyclic sulfamidates toward acetylides is described. Ring-opening reactions of a structurally diverse set of 1,2- and 1,3-cyclic sulfamidates with a range of lithium acetylides from aliphatic, cyclic, aromatic, heteroaromatic, and functionalized alkynes proceed smoothly in a regioselective manner to give the corresponding N-sulfate intermediates. Hydrolysis of these
描述了环状氨基磺酸盐对乙炔化物的合成有用水平的反应性。结构多样的1,2-和1,3-环氨基磺酸盐与一系列乙炔酸锂的开环反应,这些乙炔酸锂来自脂族,环状,芳族,杂芳族和官能化炔烃,以区域选择性方式顺利进行,得到相应的N -硫酸盐中间体。这些中间体在酸性条件下的水解提供了烷基化胺,产率为29%至98%。简要检查了在环氨基磺酸盐和炔烃中具有结构变化的炔属取代反应的范围。