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US 11,225,448 B2Granted
Method for manufacturing isopulegol
AssigneeTakasago International Corporation
InventorsYasuhiro Komatsuki, Kazuya Taira, Ayaka Koike, Kazuki Kimura
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Abstract
A method for manufacturing isopulegol includes the step of diastereoselective ring-closing a citronellal using an aluminum compound of formula (1) below. In formula (1), X represents a halogen atom, Y represents a halogen atom or a hydrogen atom, and R1 represents a phenyl group or a cycloalkyl group of 5 to 12 carbons.
Claims1
A method for manufacturing isopulegol comprising a step of diastereoselective ring-closing a citronellal using an aluminum compound of formula (1) below:
- wherein X is a chlorine atom or a bromine atom,
- Y is a chlorine atom or a hydrogen atom, and
- R1 is a cyclohexyl group, wherein the step of diastereoselective ring-closing a citronellal is performed in the presence of methyl acetoacetate.
Dependencies are inferred from the claim text.