Solvent-Free Microwave-Assisted Efficient Synthesis of 4,4-Disubstituted 2-Oxazolines
作者:Fernando García-Tellado、André Loupy、Alain Petit、Alma Leilani Marrero-Terrero
DOI:10.1002/ejoc.200200469
日期:2003.11
4,4-Disubstituted 2-oxazolines have been synthesized by a microwave-promoted solvent-free direct condensation of carboxylic acids and disubstituted β-amino alcohols in good to excellent yields. Zinc oxide is a very good solid support in cases where a Lewis acid is required. The method described herein is a very good, safe, clean, economical, and environmentally friendly alternative to the classical
4,4-二取代的 2-恶唑啉是通过羧酸和二取代的 β-氨基醇在微波促进下的无溶剂直接缩合反应合成的,产率非常好。在需要路易斯酸的情况下,氧化锌是一种非常好的固体载体。本文描述的方法是经典程序的一种非常好的、安全、清洁、经济和环保的替代方法。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)