24/06/2005 - Controller General of Patents, Designs, and Trade Marks

(21) Application No. 3068/DEL/1998 A (22) Date of filing of Application: 20/10/1998
(54) Title of the invention: “AN IMPROVED PROCESSFOR THE PREPARATION OF
DIHYDROXY ALKENES.”
(51) International Classification 7 : C 07C 27/00, C
07C 41/03
(30) Priority Data : NA
(31) Document No.: NA
(32) Date : NA
(33) Name of convention country : NA
(66) Filed U/s 5(2) : NIL
(61) Patent of addition to application No. : NA
(62) Filed on : NA
(63) Divisional to Application No. :NIL
(64) Filed on : NA
Total No. of Pages: 10
(57) Abstract:
(71) Name of the applicant:
COUNCIL OF SCIENTIFIC AND
INDUSTRIAL RESEARCH.
Address of the Applicant:
Rafi Marg, New Delhi – 110 001, India.
(72) Name of the Inventor:
DILIP DHARAMDAS SAWAIKAR
GURUNATH SURYAVANSHI
ARUMUGAM SUDALAI
An improved process for the preparation of dihydroxy alkenes using titanium silicate by mixing
of substrate having conjugated double bonds, water solvent, oxidizing agent and heterogenous
catalyst TS-1 (titanium silicate) in the ratio ranging about 2.0-5.0: 5-25: 0-25: 4-25: 1-5, heating
the mixture as obtained in step (a) in an autoclave at a temperature ranging 50 o C-100 o C for period
ranging 1 to 12 hours, followed by cooling of the reaction mixture to ambient temperature and
separating of titanium silicate and solvent by known methods to obtain the mixture of dihydroxy
alkene. Dihydroxy alkenes is important industrial chemicals.
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