Process for the preparation of carboxylic acid esters

Details Process for the preparation of carboxylic acid esters Process for the preparation of carboxylic acid esters

2008-07-15

2008-07-15

Gonzale, Porfirio Nazario (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C556S056000

Reexamination Certificate

active

11837404

ABSTRACT:
There is provided a process for preparing a carboxylic acid ester of formula (3):in-line-formulae description="In-line Formulae" end="lead"?R2COOR1  (3)in-line-formulae description="In-line Formulae" end="tail"?wherein R1isan alkyl group which may be substituted,an alkenyl group which may be substituted,an alkynyl group which may be substituted,an aralkyl group which may be substituted, ora heteroarylalkyl group which may be substituted, and R2isan alkyl group which may be substituted,an alkenyl group which may be substituted,an alkynyl group which may be substituted,an aryl group which may be substituted,a heteroaryl which may be substituted,an aralkyl group which may be substituted, ora heteroarylalkyl group which may be substituted,which process is characterized by the steps ofreacting a monohydroxy compound of formula (1):in-line-formulae description="In-line Formulae" end="lead"?R1OH   (1)in-line-formulae description="In-line Formulae" end="tail"?wherein R1is as defined above, with a zirconium compound of formula (6):in-line-formulae description="In-line Formulae" end="lead"?Zr(OR8)4  (6)in-line-formulae description="In-line Formulae" end="tail"?wherein R8is an alkyl group or an aryl group which may be substituted and is not the same as R1, to prepare a zirconium catalyst, and reacting a carboxylic acid of formula (2):in-line-formulae description="In-line Formulae" end="lead"?R2COOH   (2)in-line-formulae description="In-line Formulae" end="tail"?wherein R2is as defined above, with the monohydroxy compound of formula (1) in the presence of the zirconium catalyst.

REFERENCES:
patent: 4374760 (1983-02-01), Charles
patent: 4547522 (1985-10-01), Martel et al.
patent: 0 779 269 (1997-06-01), None
patent: 1227077 (2002-07-01), None
patent: 60-64945 (1985-04-01), None
patent: 2-13649 (1990-04-01), None
patent: 9-188649 (1997-07-01), None
patent: 11-228491 (1999-08-01), None
patent: 2002-293759 (2002-10-01), None
patent: 2003-292471 (2003-10-01), None
patent: 2004-83531 (2004-03-01), None
English language abstract of JP 06 340870 A (Dec. 13, 1994).
Shah et al., Indian J. Chem., vol. 23A, pp. 632-635, (1993).
Goel, S. C., Synthesis and Reactivity in Inorganic and Metal-organic Chemistry, vol. 15, No. 4, pp. 533-544, (1985).
Mehrotra et al., Indian J. Chem., vol. 11, No. 8, pp. 814-816, (1973).
A. Shah, A. Sing and R. C. Mehrotra, Synthesis and characterization of alkoxo- and chloro-aryloxo derivatives of titanium and zirconium, Indian Journal of Chemistry, vol. 32 A, Jul. 1993, pp. 632-635.
Mehrotra, Ram Charan, Mixed tertiary alkoxides of zirconium, J. Indian Chem. Soc., (1954) 31, 904-910 (Abstract).

Affiliated with

Also associated with

Rating

Process for the preparation of carboxylic acid esters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of carboxylic acid esters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of carboxylic acid esters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3959748