Microwave-assisted synthesis of primary amine HX salts from halides and 7 M ammonia in methanol
作者:Mark G. Saulnier、Kurt Zimmermann、Charles P. Struzynski、Xiaopeng Sang、Upender Velaparthi、Mark Wittman、David B. Frennesson
DOI:10.1016/j.tetlet.2003.10.146
日期:2004.1
on a variety of alkyl halides, as well as mesylates and tosylates. Benzylamines are obtained from benzyl halides without significant amounts of the secondary amine side products that result without microwave heating. Direct isolation of even highly volatile primary amines as their hydrogen halide salts makes the method ideal for use in parallel synthesis.
直接从相应的卤化物进行的伯胺卤化氢盐的原子经济合成避免了产生大量的仲胺副产物,并且仅需蒸发溶剂即可获得产物,产率通常大于90%。该程序在130°C下于7 M氨的甲醇溶液(Aldrich)中进行0.5至2.5 h的微波辐射,并处理多种烷基卤化物,甲磺酸酯和甲苯磺酸酯。从苄基卤化物获得苄胺,而没有大量的仲胺副产物,而无需微波加热即可得到。直接分离高挥发性的伯胺作为卤化氢盐,使得该方法非常适合用于平行合成。