Method for producing halogen-substituted aromatic aldehyde

Details Method for producing halogen-substituted aromatic aldehyde Method for producing halogen-substituted aromatic aldehyde

2007-07-10

2007-07-10

Witherspoon, Sikarl A. (Department: 1621)

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

Organic compounds

Oxygen containing

C568S437000

Reexamination Certificate

active

11011136

ABSTRACT:
In the production method of the invention, a halogen-substituted aromatic compound is reacted with carbon monoxide in the presence of hydrogen fluoride and boron trifluoride into a corresponding halogen-substituted aromatic aldehyde. By the use of hydrogen fluoride and boron trifluoride, the para position to halogen atom is selectively formylated to provide the halogen-substituted aromatic aldehyde in high yields in a short reaction time even at temperatures lower than room temperature.

REFERENCES:
patent: 2485237 (1949-10-01), Gresham et al.
patent: 4588844 (1986-05-01), Kysela et al.
patent: 5068450 (1991-11-01), Crochemore et al.
patent: 6300525 (2001-10-01), Anderson et al.
patent: 6455739 (2002-09-01), Karseboom et al.
patent: WO 02/20447 (2002-03-01), None
patent: WO 03/022788 (2003-03-01), None
European Search Report, for Application No. EP 04 10 6385, dated Mar. 4, 2005, 4 pp.

Affiliated with

Also associated with

Rating

Method for producing halogen-substituted aromatic aldehyde does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing halogen-substituted aromatic aldehyde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing halogen-substituted aromatic aldehyde will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3753513