Mechanically activated ring-opening reactions of N-acyl-1,2,3,4-tetrahydroisoquinolines derived from the synthesis of praziquantel intermediate
作者:Jingbo Yu、Zhi Wang、Yang Zhang、Weike Su
DOI:10.1016/j.tet.2015.06.105
日期:2015.9
DDQ-promoted ring-opening reaction of N-chloroacetyl-tetrahydroisoquinoline under ball milling conditions was revealed during the synthesis of Praziquantel. A variety of N-acyl-tetrahydroisoquinolines were then tested to further investigate the reaction, and plausible reaction mechanism was proposed. Ball milling was demonstrated to be an efficient tool to promote this oxidative ring-opening reaction to give
在吡喹酮的合成过程中,N-氯乙酰基-四氢异喹啉在球磨条件下发生了意想不到的DDQ促进的开环反应。然后测试了各种N-酰基-四氢异喹啉以进一步研究该反应,并提出了合理的反应机理。球磨被证明是一种有效的工具,可以促进这种氧化性开环反应,从而在较短的反应时间内以令人满意的产率提供具有良好选择性的产物。