Ring-Opening Reactions of 2-Phenyl-1’H,5H-spiro[oxazole-4,2’-quinoxalin]-3’(4’H)-ones

A general and efficient synthesis of enantiopure dihydroquinoxalinones has been developed using naturally occurring amino acids as starting materials. The reductive cyclization of N‐(o‐nitroaryl)amino esters was performed by using iron and zinc metal under mild conditions in a water/ethyl acetate mixture. The corresponding dihydroquinoxalinones were obtained in moderate to high yields and high enantiomeric purity, among which 7 new compounds were unprecedented in the literature.

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Ring-Opening Reactions of 2-Phenyl-1’H,5H-spiro[oxazole-4,2’-quinoxalin]-3’(4’H)-ones

Cited by 2 publications

References 20 publications

ChemInform Abstract: Ring‐Opening Reactions of 2‐Phenyl‐1′H,5H‐spiro[oxazole‐4,2′‐quinoxalin]‐3′(4′H)‐ones.

ChemInform Abstract: Ring‐Opening Reactions of 2‐Phenyl‐1′H,5H‐spiro[oxazole‐4,2′‐quinoxalin]‐3′(4′H)‐ones.

Iron‐ or Zinc‐Mediated Synthetic Approach to Enantiopure Dihydroquinoxalinones

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