Co-catalyzed mild and chemoselective reduction of phenyl esters with NaBH4: a practical synthesis of (R)-tolterodine
作者:Arun R. Jagdale、Arumugam Sudalai
DOI:10.1016/j.tetlet.2008.04.007
日期:2008.6
CoCl2 catalyzes effectively the chemoselective reduction of phenyl carboxylic esters to the corresponding saturated alcohols in high yields using NaBH4 at ambient conditions. By employing this methodology, the synthesis of (R)-tolterodine, a muscarinic receptor antagonist, has been achieved in high yield and optical purity.
CoCl 2在环境条件下使用NaBH 4可以高收率有效地催化苯基羧酸酯化学选择性还原成相应的饱和醇。通过采用该方法,已经以高收率和光学纯度实现了合成(R)-托特罗定(毒蕈碱受体拮抗剂)。