Regioselective alkylation of phenol with cyclopentanol over montmorillonite K10: An efficient synthesis of 1-(2-cyclopentylphenoxy)-3-[(1,1-dimethylethyl)amino]propan-2-ol {(S )-penbutolol}
作者:Prodeep Phukan、Arumugam Sudalai
DOI:10.1039/a902479d
日期:——
Regioselective alkylation of phenol with cyclopentanol is achieved over Montmorillonite K10 clay, producing 2-cyclopentylphenol, the key intermediate. The synthesis of optically active (S)-penbutolol 1, an important antihypertensive drug, is realized in 5 steps from 2-cyclopentylphenol by employing Sharpless asymmetric dihydroxylation.
在蒙脱石K10粘土的作用下,实现了苯酚与环戊醇的区域选择性烷基化反应,生成了关键中间体2-环戊基苯酚。通过使用Sharpless不对称二羟基化反应,从2-环戊基苯酚出发,经过5步反应成功合成了重要的降压药物光学活性(S)-喷布洛尔1。