Stereocontrolled Synthesis of β-Amino Alcohols from Lithiated Aziridines and Boronic Esters
作者:Frank Schmidt、Florian Keller、Emeline Vedrenne、Varinder K. Aggarwal
DOI:10.1002/anie.200805272
日期:2009.1.26
β‐Amino alcohols have been prepared with high selectivity by the addition of lithiated aziridines to boronic esters. The regioselectivity of lithiation for aryl aziridines is sensitive to the reaction conditions and to the base employed. This response was exploited to give either class of β‐amino alcohols (see scheme; Boc=tert‐butoxycarbonyl, Bus=tert‐butylsulfonyl, LTMP=lithium 2,2,6,6‐tetramethylpiperidide
通过向硼酸酯中添加锂化氮丙啶,可以高选择性地制备β-氨基醇。芳基氮丙啶的锂化的区域选择性对反应条件和所用碱敏感。利用该响应来生成任一类β-氨基醇(参见方案; Boc =叔丁氧基羰基,Bus =叔丁基磺酰基,LTMP = 2,2,6,6-四甲基哌啶锂,pin =频哪醇)。