Abstract
A straightforward and efficient synthetic method of 2′-(dialkylamino)-1-alkyl-4′H-spiro[indoline-3,5′- oxazole]-2,4′-diones and 2-(dialkylamino)-5,6-dihydro-4H-naphtho[2,1-e][1,3]oxazin-4-one derivatives have been developed from α-hydroxy and β-carbonyl amides and various Vilsmeier salts. A wide range of heterocyclic compounds were obtained in excellent yields(up to 97%), which will provide promising candidates for chemical biology and drug discovery.
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Supported by the National Natural Science Foundation of China(No.51373067).
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Approach to 2′-(Dialkylamino)-1-alkyl-4′H-spiro[indoline-3,5′- oxazole]-2,4′-diones and 1,3-Oxazin-4-ones via Cyclization of Vilsmeier Salts with α-Hydroxy and β-Carbonyl Amides
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Dai, J., Liu, B., Wei, Z. et al. Approach to 2′-(Dialkylamino)-1-alkyl-4′H-spiro[indoline-3,5′- oxazole]-2,4′-diones and 1,3-Oxazin-4-ones via Cyclization of Vilsmeier Salts with α-Hydroxy and β-Carbonyl Amides. Chem. Res. Chin. Univ. 35, 216–220 (2019). https://doi.org/10.1007/s40242-019-8307-2
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DOI: https://doi.org/10.1007/s40242-019-8307-2