Process of preparing glycolaldehyde

Details Process of preparing glycolaldehyde Process of preparing glycolaldehyde

2004-12-15

2008-11-11

Witherspoon, Sikarl A (Department: 1621)

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

Organic compounds

Oxygen containing

C568S454000

Reexamination Certificate

active

07449607

ABSTRACT:
The invention provides a process of preparing glycolaldehyde by reacting formaldehyde with hydrogen and carbon monoxide in the presence of a catalyst composition which is based on, a) a source of rhodium, and b) a ligand of general formula R1P—R2(I), wherein R1is a bivalent radical that together with the phosphorous atom to which it is attached is an optionally substituted 2-phospha-tricyclo[3.3.1.1{3,7}]-decyl group, wherein from 1 to 5 of the carbon atoms has been replaced by a heteroatom, and wherein R2is a monovalent radical which is an optionally substituted hydrocarbyl group having from 1 to 40 carbon atoms; a catalyst composition of use in said process; and a process of preparing ethylene glycol from the glycolaldehyde thus prepared.

REFERENCES:
patent: 3050531 (1962-08-01), Epstein et al.
patent: 4414421 (1983-11-01), Drent
patent: 4608444 (1986-08-01), Jacobson
patent: 2003/0092935 (2003-05-01), Ahlers
patent: 0331512 (1989-09-01), None
patent: 01/85661 (2001-11-01), None
International Search Report PCT/EP2004/053492 dated Apr. 27, 2005.
Joanne H. Downing. “Precious Metal Complexes of Some Novel Functionalized Secondary and Tertiary Phosphines”. Chapter 3. (Thesis submitted to the University of Bristol. Nov. 1992).
Drent, Eite: “Opportunities in Homogenous Catalysis”, Pure & Appl. Chem., vol. 62, No. 4, pp. 661-669, 1990.

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