METHOD FOR PRODUCING OPTICALLY ACTIVE ALPHA-METHYL- BIS-3,5-(TRIFLUOROMETHYL)BENZYL ALCOHOL

Title:

METHOD FOR PRODUCING OPTICALLY ACTIVE ALPHA-METHYL- BIS-3,5-(TRIFLUOROMETHYL)BENZYL ALCOHOL

Document Type and Number:

Japanese Patent JP2001316309

Kind Code:

A

Abstract:

To provide a method for producing optically active α-methyl- bis-3,5-(trifluoromethyl)benzyl alcohol which is an important intermediate of medicines and agrochemicals.

The optically active α-methyl-bis-3,5-(trifluoromethyl)benzyl alcohol is produced by asymmetrically methylating bis-3,5-(trifluoromethyl) benzaldehyde with dimethylzinc or methyltriisopropoxytitanium in the presence or without presence of an asymmetric catalyst prepared from optically active α,α,α',α'-tetraaryl-1,3-dioxolane-4,5-dimethanols(TADDOLs) and tetraisopropoxytitanium and the tetraisopropoxytitanium which is a cocatalyst.

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Inventors:

NARIZUKA SATOSHI
ISHII AKIHISA
KUME KOJI

Application Number:

JP2000133798A

Publication Date:

November 13, 2001

Filing Date:

May 02, 2000

Export Citation:

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Assignee:

CENTRAL GLASS CO LTD

International Classes:

B01J31/22; C07B61/00; C07C29/40; C07C33/46; C07F3/06; C07F7/28; (IPC1-7): C07C29/40; B01J31/22; C07C33/46

Attorney, Agent or Firm:

Yoshiyuki Nishi

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