3- Oxazolin-5-ones, 2-arylidene derivatives ring-opening

Oxazolin-4-ones, 106 2-Oxazolin-6-ones, acyl donors, 82 acylamino ketones from, 82 acylation of, 82-86 4-alkyl-, oxidative coupling of, 80 in amino acid syntheses, 89-91 4-arylidene-, ring-opening of, 93 4-arylidene-2-phenyl-, 95 azidolysis of, 81 4-benzylidene-2-styryl-, 93 hia derivatives of, 79-81 conversion into other heteroc3 1es, 91-92... 

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