A one-pot [Bmim]OH-mediated synthesis of 3-benzamidocoumarins
摘要：
The first example of an ionic liquid-promoted one-pot synthesis of 3-benzamidocoumarins from salicylaldehydes and 2-pheny-1,3-oxazolan-5-one via Knoevenagel condensation-ring transformation cascades has been reported. No by-product formation, operational simplicity, ambient temperature and high yield (85–97%) are the salient features of the present synthetic protocol. After isolation of the product, the ionic liquid, [Bmim]OH can be easily recycled for further use without any loss of efficiency.
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关键词：
Ionic-liquids 3-Aminocoumarins Benzopyrans Atom-efficient Salicylaldehydes 2-Phenyl-1,3-oxazolan-5-one
DOI：
10.1016/j.tetlet.2009.02.166
被引量：
年份：
2009
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