Catalyst free Michael addition of 3-methyl-2-pyrazolin-5-one to β-nitrostyrenes ‘on water’: a green protocol for facile synthesis of 4-(1-aryl-2-nitroethyl)-3-methyl-1H-pyrazol-5-ol |
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收稿时间: | 13 June 2013 |
修稿时间: | 6 August 2013 |
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