Abstract: This application relates to 2-methyl-5,7-dihydrothieno-[3,4d]-pyrimidine, which is useful for flavoring foodstuffs or tobacco compositions and altering the fragrance of perfume compositions.

Abstract: Methods for altering, modifying or enhancing the roasted, nutty taste and aroma of foodstuffs comprising incorporating with such foodstuffs a small but effective amount of 2-methyl-3-thio-(2-methylbutyryl)-furan having the formula: ##SPC1##Together with compositions containing the 2-methyl-3-thio-(2-methylbutyryl)-furan for use in altering, modifying or enhancing such organoleptic properties.

Abstract: Methods for altering, modifying or enhancing the creamy, cocoa aroma and/or taste of foodstuffs comprising incorporating with such foodstuffs a small but effective amount of 2,5-dimethyl-3-thioisovaleryl furan having the structure: ##SPC1##

Abstract: Processes for altering the flavors of consumable products, including foodstuffs and tobaccos, which comprise adding thereto a small but effective amount of at least one oxocyclic pyrimidine having the formula ##SPC1##Wherein R.sub.1 is alkyl, halogen or hydrogen and R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are the same or different and are hydrogen or alkyl; flavoring and flavor-enhancing compositions containing such oxocyclic pyrimidines; and novel oxocyclic pyrimidines and processes for the preparation of such oxocyclic pyrimidines.

Abstract: 3-Furyl beta-chalcogenalkyl sulfides having the structure: ##SPC1##Wherein X is a chalcogen selected from the group consisting of oxygen and sulfur; R.sub.2 and R.sub.3 are each selected from the group consisting of methyl and hydrogen, at least one of R.sub.2 or R.sub.3 being methyl; and R.sub.4 and R.sub.5, taken separately, are each methyl, or R.sub.4 and R.sub.

Abstract: Process for producing 3-thia substituted alkane 1,4 diones comprising the steps of:I. Providing a 2-ene-1,4 dione having the structure: ##SPC1##Ii. Intimately admixing said 2-ene-1,4 dione with a sulfur compound having the formula:R.sub.3 SHthereby providing a substituted or sunsubstituted 2-thia substituted alkane 1,4 dione having the structure: ##SPC2##WhereinR.sub.3 is selected from the group consisting of acyl and royl, wherein R.sub.2 is lower alkyl; and wherein R.sub.1, R.sub.4 and r.sub.6 are the same or different and are selected from the group consisting of hydrogen and lower alkyl; wherein when R.sub.1 is hydrogen, the reaction (ii) is carried out in the presence of an organic base; and wherein when R.sub.1 is lower alkyl, the reaction (ii) is carried out in the absence of catalyst. Examples of such organic bases are piperidine, pyridine, triethyl amine, quinoline or alpha-picoline.