Process for the preparation of methyl 1,1-dichloromethyl ether o

Details Process for the preparation of methyl 1,1-dichloromethyl ether o Process for the preparation of methyl 1,1-dichloromethyl ether o

1995-10-19

1997-09-30

Cintins, Marianne M.

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

Organic compounds

Oxygen containing

C07C 4304, C07C 4312

Patent

active

056727704

ABSTRACT:
The invention relates to a process for the preparation of methyl 1,1-dichloromethyl ether or of ethyl 1,1-dichloromethyl ether, according to which methyl formate or ethyl formate is reacted with phosgene, diphosgene, triphosgene or oxalyl chloride or one of their mixtures, at a temperature of between 40.degree. C. and 100.degree. C., in the presence of a catalyst chosen from the group consisting of trisubstituted phosphine oxides and sulphides, trisubstituted phosphine dichlorides, formamides, the products of reaction of formamides with chlorinating agents and mixtures thereof. The 1,1-dichloromethyl ethers are obtained in a high purity. They are useful especially for performing the formylation of aromatic compounds.

REFERENCES:
patent: 5196611 (1993-03-01), Henkelmann et al.
Journal of Organic Chemistry, vol. 23, No. 5, 22 May 1958 Easton US, pp. 745-746, L.R. Evans et al "Preparation of certain polychloro-dimethyl ethers".
"Organic Syntheses vol. 47" 1967, John Wiley, New York, p. 47--p. 49.

Affiliated with

Also associated with

Rating

Process for the preparation of methyl 1,1-dichloromethyl ether o 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 methyl 1,1-dichloromethyl ether o, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of methyl 1,1-dichloromethyl ether o will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2257991