US 10,538,470 B2Granted

Process for the preparation of limonene-4-ol

AssigneeBASF Agro B.V.

InventorsBernd Wolf, Michael Rack, Stefan Benson, Helmut Kraus, Roland Goetz, Sukunath Narayanan, Chidambaram Rishinaradamangalam

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The present invention relates to a process for the preparation of limonene-4-ol by an epoxide ring opening isomerization of terpinolene epoxide.

Dependent claims

A process for the preparation of limonene-4-ol of formula (II)

comprising subjecting a selective epoxide ring opening isomerization to a terpinolene epoxide of formula (I)
in the presence of a sulfonic acid and an organic base as a catalyst.

Dependencies are inferred from the claim text.

C07C 29/56
Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring: by isomerisation
C07C 29/17
Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring: by hydrogenation…
C07D 493/08
In which the condensed system contains two hetero rings: bridged systems
C07C 2601/16
With a six-membered ring: the ring being unsaturated

From the US filing history. Foreign family members aren’t listed.

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