PROCESS FOR PREPARING A HEARTY FLAVOURING MATERIAL, THE FLAVOURING MATERIAL SO PREPARED AND FLAVOURING FOODSTUFFS THEREWITH.

摘要

We claim: 1. A process for preparing a hearty flavouring material comprising heating to a temperature of from 100-200oC at least one conjugated cyclic carbonyl compound having the formula 1 of the accompanying drawings wherein the dashed line is a single bond or a carbon-carbon double bond; Y is -O-, -CR3R4- or =CR3; X is -O- of CR2R5- when the dashed line is a single bond and Y is -CR3R4-; X is -CR2RS- when the dashed line is a single bond and Y is -O-; X is =CR2-O- when the dashed line is double bond, and Y is =CR2:,- when the dashed line is a double bond; R1,R2, R3, R4 and R5 are the same or different and are lower alkyl containing 1 to 4 carbon atoms or hydrogen; with hydrogen sulfide in the molar ratio of sulfide to carbonyl compound of from about 0.05:1 to about 3:1 under a pressure of two to ten atmospheres.