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- [2] REACTIONS OF CYCLIC BETA-KETO-ESTERS AND OTHER ENOL DERIVATIVES WITH 3-ACETOXYAMINO-2-ISOPROPYLQUINAZOLIN-4(3H)-ONE - FURTHER OXIDATION OF THE CYCLIC ALPHA-(3,4-DIHYDRO-2-ISOPROPYL-4-OXOQUINAZOLIN-3-YL)AMINO KETONES WITH LEAD-TETRAACETATE LEADING TO RING-EXPANSION (IN DICHLOROMETHANE) AND RING-CLEAVAGE (IN METHANOL) JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 1995, (12): : 1533 - 1542