作者:Ming-Juan Lee、Chung-Ming Sun
DOI:10.1016/j.tetlet.2003.10.123
日期:2004.1
An efficient, microwave-assisted method for the liquid-phase combinatorial synthesis of 1,3-disubstituted hydantoin has been developed. Chloroacetyl chloride was directly anchored to HO–PEG–OH and subsequently reacted with various primary amines in a microwave cavity. The PEG bound secondary amine coupled with isocyanates and concomitant cyclization–cleavage step occurred in mild basic conditions by
已开发出一种高效的微波辅助方法,用于液相组合合成1,3-二取代乙内酰脲。氯乙酰氯直接固定在HO-PEG-OH上,随后在微波腔中与各种伯胺反应。PEG结合的仲胺与异氰酸酯以及伴随的环化-裂解步骤在微波闪光加热条件下在温和的碱性条件下发生。然后以适中的产率和高纯度从可溶性基质中释放出所需的产物。