Process for the preparation of acyl isocyanates

Details Process for the preparation of acyl isocyanates Process for the preparation of acyl isocyanates

1989-03-23

1990-11-13

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

562871, 549 72, 549487, 558415, C07D21378, C07D30510, C07D33338, C07C26302

Patent

active

049703196

ABSTRACT:
The invention relates to a process for the preparation of acyl isocyanates of formula ##STR1## in which R is an alkyl radical, a substituted or unsubstituted naphthyl or phenyl radical or a substituted or unsubstituted aromatic heterocyclic radical, which consists in reacting an acyl halide of formula ##STR2## in which R has the above meaning and X denotes a fluorine, chlorine or bromine atom, with a sodium or potassium cyanate in the presence of a compound chosen from tin(IV), zinc or nickel(II) halides.
The acyl isocyanates thus prepared are very useful for forming ureas or carbamates.

REFERENCES:
patent: 3155700 (1964-11-01), Steyermark et al.
patent: 3450747 (1969-06-01), Smith et al.
patent: 3850985 (1974-11-01), Hagemann
patent: 4529919 (1985-07-01), Clifford et al.
Anhydrous aluminum Choride in Organic Chemistry, C. A. Thomas, 1941, pp. 156-157, 381, 531, 596, 602, 636-644.
Synthetic Methods of Organic Chemistry, W. Theilheimer, 1972, 26/687, p. 334.
Chemical Communication, H. H. Wasserman and S. H. Wentland, 1969, p. 1216.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-777881