Process for the preparation of iodoalkynyl carbamates

Details Process for the preparation of iodoalkynyl carbamates Process for the preparation of iodoalkynyl carbamates

1992-04-15

1993-02-02

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

560 22, 560 25, 560 27, 560 33, 560158, 560167, C07C26100

Patent

active

051839270

ABSTRACT:
In preparing an iodoalkynyl carbamate by iodinating an alkynyl carbamate with iodine monochloride in water or a solvent mixture composed of water and an organic solvent in the presence of a base, the iodoalkynyl carbamate can be obtained in a yield of as high as 96 to 98% by using the alkynyl carbamate in a concentration of 5 to 20% by weight, dissolving the iodine monochloride in an aqueous solution of hydrochloric acid or an aqueous solution of an alkali metal chloride (the amount of iodine monochloride used being within the range of 1.0 to 1.2 moles per mole of the alkynyl carbamate and the amount of base used being within the range of 0.95 to 2.00 gram equivalents per mole of iodine monochloride), and carrying out the reaction at a temperature of 10.degree. to 40.degree. C. for a period of 1 to 4 hours.
According to this process, highly pure iodoalkynyl carbamates which are useful as industrial germicides can be prepared with good selectivity and in high yield.

REFERENCES:
patent: 3769271 (1973-10-01), Southard
patent: 3923870 (1975-12-01), Singer
Larsen et al., "Iodinated 3,5-Diaminobenzoic Acid Derivatives," J. Am. Chem. Soc., vol. 78, pp. 3210-3216 (1956).

Affiliated with

Also associated with

Rating

Process for the preparation of iodoalkynyl 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 Process for the preparation of iodoalkynyl carbamates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of iodoalkynyl carbamates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-7782