Certain furan-3-thiols, certain dihydro derivatives thereof and 2,5-dimethyltetrahydrofuran-3-thiol
AssigneeInternational Flavors & Fragrances Inc.
InventorWilliam John Evers
Life of this patent
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Abstract
Novel furanthiols of the formula ##STR1## wherein R.sub.2, R.sub.3 and R.sub.7 is hydrogen or alkyl and the dashed lines represent single or double carbon-to-carbon bonds are prepared and isolated.
Claims10
A furanthiol having the formula ##STR6## wherein R.sub.2 is alkyl containing 2 to 5 carbon atoms, each of R.sub.3 and R.sub.7 is hydrogen or alkyl containing 1 to 5 carbon atoms and the dashed line represents a single or double carbon-to-carbon bond.
Substantially pure 2-methylfuran-3-thiol having a .lambda.max at 3.92, 6.60, 7.26, 7.40, and 13.58.mu. by infrared spectroscopy.
A dihydrofuranthiol having the formula ##STR7## wherein R.sub.2 is alkyl containing 1 to 5 carbon atoms, and each of R.sub.3 and R.sub.7 is hydrogen or alkyl containing 1 to 5 carbon atoms.
2-Methyl-[4,5H]-dihydrofuran-3-thiol.
2,5-Dimethyl-[4,5H]-dihydrofuran-3-thiol.
2,5-Dimethyltetrahydrofuran-3-thiol.
A substantially pure form of a furanthiol of the formula:
- ##STR8## wherein R.sub.2 is hydrogen or methyl and the dashed line represents a single or double carbon-to-carbon bond.
A substantially pure form of the compound of the formula ##STR9## wherein R.sub.2 is hydrogen or methyl.
Dependencies are inferred from the claim text.