Transition-Metal-Based Lewis Acid Cataly
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Li-Wen Xu; Lyi Li; Chun-Gu Xia
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Article
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2004
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John Wiley and Sons
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German
⚖ 69 KB
Several transition-metal-based Lewis acid catalysts, especially FeCl 3 ¥ 7 H 2 O, CrCl 3 ¥ 6 H 2 O, and SnCl 4 ¥ 4 H 2 O, were shown to be highly effective for aza-type Michael reactions between electrophilic a,b-unsaturated compounds and both aliphatic and aromatic amines in aqueous solution. Advan