A microwave synthesis of the cis and trans isomers of 3-hydroxy-2-(4-methoxyphenyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one: The influence of solvent and power output on the diastereoselectivity
作者:Juan A. Vega、Sénida Cueto、Andrés Ramos、Juan J. Vaquero、JoséL. García-Navio、Julio Alvarez-Builla、Jesus Ezquerra
DOI:10.1016/0040-4039(96)01361-5
日期:1996.8
A diastereoselective one-pot synthesis of the trans- and cis-3-hydroxy-2-(4-methoxyphenyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one nucleus, a key intermediate in the preparation of the calcium channel blocker Diltiazem, is carried out under microwave irradiation in an open vessel. Control of the diastereoselectivity is achieved by varying the reaction time and power output as well as the nature of
非对映选择性一锅合成的反-和顺式-3-羟基-2-(4-甲氧基苯基)-2,3-二氢-1,5-苯并噻唑啉-4(5 H)-一个核,是核中的关键中间体钙通道阻滞剂地尔硫卓的制备是在敞口容器中在微波辐射下进行的。非对映选择性的控制是通过改变反应时间和功率输出以及溶剂的性质来实现的。