Organocatalytic Regioselective Chlorosilylation of Oxirane Derivatives: Mild and Effective Insertion of Bulky Silyl Chloride by Using 4-Methoxypyridine<i>N</i>-Oxide
highly regioselective organocatalytic chlorosilylation of oxirane derivatives using bulky silyl reagents such as (tert‐butyl)diphenylsilyl chloride (TBDPSCl) or triphenylsilyl chloride (Ph3SiCl) was developed. The reaction was effectively catalyzed with 4‐methoxypyridine N‐oxide in the presence of sodium sulfate (Na2SO4). Several silylated halohydrins were obtained with complete regioselectivity and the
开发了使用笨重的甲硅烷基试剂(如(叔丁基)二苯基甲硅烷基氯(TBDPSCl)或三苯基甲硅烷基氯(Ph 3 SiCl))对环氧乙烷衍生物进行高度区域选择性的有机催化氯硅烷化反应。在硫酸钠(Na 2 SO 4)存在下,使用4-甲氧基吡啶N-氧化物可有效催化该反应。获得了几个具有完全区域选择性的甲硅烷基化的卤代醇,并将该反应用于卡维地洛的合成。
ANDREWS, G. C.;CRAWFORD, T. C.;CONTILLO, L. G. ,, JR, TETRAHEDRON LETT., 1981, 22, N 39, 3803-3806
作者:ANDREWS, G. C.、CRAWFORD, T. C.、CONTILLO, L. G. ,, JR