International Flavors & Fragrances Inc.

Loren B Schreiber

William L Schreiber

Ranya Muralidhara

Kenneth K Light

Takao Yoshida

Joseph A McGhie

Ronald P Schreck

Described is a process for preparing solanone and norsolanadione wherein in preparing solanone, the compound having the structure: ##STR1## or a mixture of compounds defined according to the structure: ##STR2## is reacted with methyl lithium and the resulting intermediate is hydrolyzed and the resulting compound is dehydrated and wherein in preparing norsolanadione this compound or mixture of compounds is reacted with ethylene glycol or propylene glycol thereby forming a ketal and the resulting ketal is reacted with methyl lithium and the resulting intermediate is then hydrolyzed in the presence of acid in which one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond.

Process for producing solanone, norsolanadione and intermediates therefor

Described is a process for preparing solanone and norsolanadione, both useful as tobacco flavorants.

Described is a process for preparing solanone and norsolanadione using chemical intermediates: which provide an organoleptically improved smoking tobacco product and additives therefor.

The invention provides an organoleptically improved smoking tobacco product and additives therefor as well as methods of making the same.

Described is a process for preparing solanone and norsolanadione using chemical intermediates defined according to the generic structure: ##STR1## wherein X is one of the moieties: ##STR2## wherein R represents hydrogen or methyl; wherein Y represents one of the structures: ##STR3## wherein one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond; with the provisos that:

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Aberdeen, NJ, United States of America

Loren B Schreiber