Processes for preparing a 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl carboxylate compound and hydroxymethyl 1,2,2-trimethyl-3-cyclopentenyl ketone, and a halomethyl (1,2,2-trimethyl-3-cyclopentenyl) ketone compound
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsTakeshi Kinsho, Tomohiro Watanabe
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Abstract
A process for preparing a 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl carboxylate compound of the following general formula (6), wherein R represents a monovalent hydrocarbon group having 1 to 9 carbon atoms, the process comprising esterifying a 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl compound of the following general formula (5), wherein X represents a hydroxyl group or a halogen atom, to form the 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl carboxylate compound (6).
Claims5
A process for preparing a 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl carboxylate compound of the following general formula (6):
- wherein R represents a monovalent hydrocarbon group having 1 to 9 carbon atoms, the process comprising:
- esterifying a 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl compound of the following general formula (5):
- wherein X represents a hydroxyl group or a halogen atom,
- to form the 2-(1,2,2-trimethyl-3-cyclopentenyl)-2-oxoethyl carboxylate compound (6).
A halomethyl (1,2,2-trimethyl-3-cyclopentenyl) ketone compound of the following general formula (7):
- wherein X1 represents a halogen atom.
Dependencies are inferred from the claim text.