Thiadiazolopyridines

Details Thiadiazolopyridines Thiadiazolopyridines

1992-04-09

1993-08-10

Ford, John M.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

544 96, 544127, 546114, C07D51304

Patent

active

052350509

ABSTRACT:
The process according to the invention for the preparation of herbicidal pyridylsulfonylureas of the formula (I) ##STR1## in which R.sup.1 to R.sup.5 and X are as defined in claim 1 comprises the reaction of the zwitterion (II) with the amino heterocycle (III) ##STR2## The novel zwitterionic 1,1,3-trioxo-1,2,4-thiadiazolo-[4,5-a]pyridines can be obtained according to the invention by the reaction of phosgene with compounds IV, or the reaction of phosgene with compounds V ##STR3## in the presence of an alkyl isocyanate.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1726379