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2005
Fused pyrimidine derivatives
R 0515
Synthesis of 2-Substituted and 2,3-Disubstituted Quinazolin-4-ones Containing
Sterically Hindered Phenol Residue. — A variety of novel 2-substituted quinazo07- 152 alin-4-ones
(III) and 2,3-disubstituted quinazolin-4-ones (VI) containing a 3,5-di-tert-butyl-4-hydroxyphenyl group is prepared by condensation reaction of ethyl anthranilate (I) with several imino esters (II) or by reaction of benzoxazinone (IV) with
3,5-di-tert-butyl-4-hydroxybenzaldehyde derivatives (V), respectively. —
(KELAREV, V. I.; SILIN, M. A.; KOSHELEV, V. N.; BORISOVA, O. A.; Chem.
Heterocycl. Compd. (N. Y.) 40 (2004) 5, 616-621; Gubkin Oil Gas State Univ.,
Moscow 117917, Russia; Eng.) — R. Staver
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