Institute of Chemistry, Academia Sinica, 128 Academia Road Sec. 2, Nankang Taipei 11529 (Taiwan) http://www.chem.sinica.edu.tw/faculty/index.php?piName=rjchein.
Angew Chem Int Ed Engl. 2014 Aug 18;53(34):9026-9. doi: 10.1002/anie.201404495. Epub 2014 Jun 27.
A hydroxy-directed alkylation of an N,N-diethylarylamide using CIPE-assisted α-silyl carbanions (CIPE = complex-induced proximity effect) has been developed using a simple reagent combination of LDA (lithium diisopropylamide) and chlorosilane. A study of the mechanism, and the application of the procedure to an anionic Snieckus-Fries rearrangement for a highly efficient synthesis of the potent phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002, are reported.
一种使用 CIPE(协同诱导近程效应)辅助的α-硅烷基碳负离子对 N,N-二乙基芳酰胺的羟基导向烷基化反应已经被开发出来,该反应使用的是 LDA(二异丙基氨基锂)和氯硅烷的简单试剂组合。本文报道了对该反应机理的研究,以及该方法在阴离子 Snieckus-Fries 重排反应中的应用,以实现高效合成强效的磷酸肌醇 3-激酶(PI3K)抑制剂 LY294002。