Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent
1992-03-27
1993-01-12
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitriles
558388, 512 6, C07C25330
Patent
active
051792222
ABSTRACT:
Described is the use in imparting, augmenting or enhancing aromas to or in perfume compositions, colognes and perfumed articles by admixing therewith an aroma imparting, augmenting or enhancing quantity of 2,2-dimethyl-4-phenyl valeronitrile defined according to the structure: ##STR1## Also described herein is a process for preparing phenyl butyronitriles by reacting isobutyronitrile having the structure: ##STR2## with a styrene derivative defined according to the structure: ##STR3## according to the reaction: ##STR4## in the presence of a catalyst selected from the group consisting of sodium hydride and lithium diisopropyl amide having the structure: ##STR5## at a temperature in the range of from about 90.degree. C. up to about 130.degree. C. yielding more than about 65% by weight of product wherein R.sub.1 and R.sub.2 are the same or different and each represents hydrogen or methyl.
REFERENCES:
Semmelhack, et al, J. Am. Chem. Soc., vol. 102, No. 21, (1980), pp. 6584-6586, (Title of Paper: "Arene-Metal Complexes in Organic Synthesis: Addition to Styrene-Type Ligands").
De Virgilio John J.
Narula Anubhav P. S.
Schreiber William L.
Brust Joseph Paul
International Flavors & Fragrances Inc.
Liberman Arthur L.
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