Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 356, Issue 18, Pages 3794-3798Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201400652
Keywords
3-Amino-4-dialkylphosphono-2-quinolinones; Imino isatin; Multifunction; Ring expansion; Dimethyl (diazomethyl)phosphonate
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Funding
- National Science Foundation of China [21172180]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110182110006]
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Multifunctional 3-amino-4-dialkylphosphono-2-quinolinones have been prepared by onepot nucleophilic addition and regioselective ring enlargement of imino isatins. The addition reaction between imino isatins and dialkyl (diazomethyl)phosphonate proceeds smoothly using potassium carbonate as a catalyst, and a subsequent regioselective ring expansion promotes by salicylic acid to afford the desired products in high yields.
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