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Title:
PRODUCTION OF CHIRAL UNSATURATED ALCOHOL HAVING HIGH OPTICAL PURITY
Document Type and Number:
Japanese Patent JPH10310553
Kind Code:
A
Abstract:

To obtain the subject compound useful for medicines or agrochemicals in high optical purity and high yield by adding asymmetric hydrogen in dienol or enynol ester in the presence of a rhodium catalyst.

The objective chiral allylic alcohol ester is obtained by subjecting a dienol ester of formula II (R and R' are each a 1-20C alkyl, a 6-20C aryl, a 4-20C heteroaryl, etc.) or an enynol ester of formula III to hydrogen addition polymerization in the presence of 0.5-1 mol% of a rhodium catalyst, e.g. a rhodium (I) compound of formula I (R" is a 1-4C alkyl) produced from bis(1,5-cyclooctadienyl)rhodium (I) tetrafluoroborate and a chiral bisphosphine ligand and using tetrahydrofuran and methanol as solvents, at from a freezing point to a boiling point of a solvent, preferably 0-65°C under a pressure of 1-100 atm.


Inventors:
BOAZ NEIL WARREN
Application Number:
JP10125098A
Publication Date:
November 24, 1998
Filing Date:
April 13, 1998
Export Citation:
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Assignee:
EASTMAN CHEM CO
International Classes:
C07C33/03; C07C67/283; C07C69/14; C07C69/157; C07B57/00; (IPC1-7): C07C69/14; C07B57/00; C07C33/03; C07C69/157
Attorney, Agent or Firm:
Takashi Ishida (4 others)