Convenient Syntheses of Functionalized Dialkyl Ketones and Alkanoylsilanes: 1-(Benzotriazol-1-yl)-1-phenoxyalkanes as Alkanoyl Anion Equivalents
作者:Alan R. Katritzky、Hengyuan Lang、Zuoquan Wang、Zhu Lie
DOI:10.1021/jo960830o
日期:1996.1.1
with alkyl halides, aldehydes, ketones, and imines yield the corresponding substituted derivatives that undergo hydrolysis under acidic conditions to afford the expected functionalized ketones 13, 15,17, 19, 21, 24, and25. Two successive lithiations of (benzotriazolyl)phenoxymethane, each followed by reaction with a trialkylsilyl chloride, alkyl halide, aldehyde, or ketone, generate similar intermediates
通过相应醛的两步转化制得的(苯并三唑-1-基)-1-苯氧基烷烃10很容易被BuLi在次甲基上去质子化。随后与卤代烷,醛,酮和亚胺的反应产生相应的取代衍生物,所述取代的衍生物在酸性条件下进行水解,得到预期的官能化的酮13、15、17、19、21、24和25。(苯并三唑基)苯氧基甲烷的两次连续锂化,每次与三烷基甲硅烷基氯,烷基卤化物,醛或酮反应,生成相似的中间体27、29、31、33和36。随后水解27、29、31、33 ,和36,以良好的产率产生官能化的酮28、30和32以及链烷酰基硅烷34和37。