作者:Mohammed Anif Pasha、A. Vamshi Krishna、Etikala Ashok、Dhevalapally B. Ramachary
DOI:10.1021/acs.joc.9b02415
日期:2019.12.6
reductive coupling protocol has been developed for the selective high-yielding synthesis of nearly fifty examples of propargylated cyclic/acyclic systems from the various propargyl aldehydes, cyclic/acyclic CH acids, and Hantzsch ester under ambient conditions. It is an economical, efficient, catalytic, metal-free protocol for the quick gram-scale synthesis of propargylated cyclic/acyclic compounds
已经开发了一种氨基酸催化的三组分还原偶联方案,用于在环境条件下由各种炔丙基醛,环状/无环CH酸和Hantzsch酯选择性地高产合成近50个实例的炔丙基化环状/非环状系统。这是一种经济,有效,催化,无金属的方案,可用于快速克级合成炔丙基化的环状/无环化合物,并且许多偶联化合物是通过简单的沉淀-过滤技术(而非柱色谱)纯化的。通过使用路易斯酸(AgOTf)催化的环化醚化反应,将功能丰富的炔丙基化的环状1,3-二酮专门转化为天然产物和药物中发现的二氢吡喃。进一步,