One-pot synthesis of 1H-isochromenes and 1,2-dihydroisoquinolines by a sequential isocyanide-based multicomponent/Wittig reaction
作者:Long Wang、Zhi-Rong Guan、Ming-Wu Ding
DOI:10.1039/c5ob02405f
日期:——
A one-pot synthesis of 1H-isochromenes and 1,2-dihydroisoquinolines by a I-MCR/Wittig sequence was developed. The reaction of phosphonium salt 5, an acid, an amine (or without), and an isocyanide gave the 1H-isochromenes 7 or 1,2-dihydroisoquinolines 9 in good yields by a sequential Passerini or Ugi condensation and an intramolecular Wittig reaction in the presence of K2CO3.
开发了通过I-MCR / Wittig序列一锅合成1 H-异色酮和1,2-二氢异喹啉。Pass盐5,酸,胺(或无胺)和异氰酸酯的反应通过连续的Passerini或Ugi缩合反应以及分子内Wittig反应,可高收率生成1 H-异色酮7或1,2-二氢异喹啉9。 K 2 CO 3的存在。