Preparation of carbamates

Details Preparation of carbamates Preparation of carbamates

1984-06-27

1985-10-29

Helfin, Bernard

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

Organic compounds

Carboxylic acid esters

560 12, 560 25, C07C125065, C07C125073

Patent

active

045501882

ABSTRACT:
Disclosed is an improved process for the preparation of carbamates by heating an organic carbonate and an aromatic amine in the presence of aluminum as catalyst and a promoter comprising a combination of iodine and a mercury salt.
High reaction temperatures are avoided by the process and conversions to carbamate products are high. Additionally, the process is economically attractive because even the common aluminum foil can be used as the catalyst.
The products prepared by the process can be used in the production of insecticides, and, particularly, as intermediates in the preparation of organic mono- and polyisocyanates.

REFERENCES:
patent: 2762845 (1956-09-01), Stroh et al.
patent: 3763217 (1973-10-01), Brill
patent: 4100351 (1978-07-01), Romano et al.
patent: 4268683 (1981-05-01), Gurgiolo
patent: 4268684 (1981-05-01), Gurgiolo
patent: 4395565 (1983-07-01), Romano et al.

Affiliated with

Also associated with

Rating

Preparation of carbamates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of carbamates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of carbamates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-729365