Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1977-06-16
1978-12-12
Rush, Raymond V.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
252522, 544 88, 260586R, 260586F, 260593R, C07D26304, C07D26506
Patent
active
041295692
ABSTRACT:
Described are intermediate mixtures of cyclic oxazo derivatives having the generic structure: ##STR1## wherein one of the dashed lines is a carbon carbon double bond and the other two dashed lines are carbon carbon single bonds and n is 0 or 1; R.sub.1, R.sub.2 and R.sub.6 are each the same or different and each represents hydrogen or C.sub.1 -C.sub.3 lower alkyl; and R.sub.3, R.sub.4 and R.sub.5 are each the same or different and each represents hydrogen or methyl; as well as the precursor oxazo derivative having the structure: ##STR2## Such oxazo derivatives have as their primary use intermediates in reactions whereby mixtures of dihydro alpha ionone, dihydro beta ionone and dihydro gamma ionone or homologues thereof are produced.
REFERENCES:
patent: 2960508 (1960-11-01), Croxall et al.
patent: 2974140 (1971-03-01), Croxall et al.
Ishino et al. - J. Org. Chem. 39, (1), 1974.
Stoll et al. - Hew. Chim. Acta. 38, 1593 (1955).
Kato et al. - Bull. Chem. Soc. Jap. 1971, 44(12), 3437-3439.
Hall John B.
Schreiber William L.
Siano James N.
Haidt Harold
International Flavors & Fragrances Inc.
Liberman Arthur L.
Rush Raymond V.
Wolffe Franklin D.
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