Preparation of O,S-dialkyl phosphoroamidothioates

Details Preparation of O,S-dialkyl phosphoroamidothioates Preparation of O,S-dialkyl phosphoroamidothioates

1981-05-19

1983-06-21

Sutto, Anton H.

Chemistry of carbon compounds

Dipeptides, e.g., aspartame, anserine, carnosine, etc.

260959, C07F 924

Patent

active

043893503

ABSTRACT:
In the isomerization of an O,O-dialkyl phosphoroamidothioate to an O,S-dialkyl phosphoroamidothioate by heating the O,O-dialkyl starting material in the presence of a catalyst, followed by recovery of the desired O,S-dialkyl end product, the improvement which comprises arresting the heating when about 40 to 70% of the O,O-dialkyl starting material has isomerized to O,S-dialkyl product, separating unreacted O,O-dialkyl starting material from the O,S-dialkyl isomerization product, and further treating the O,O-dialkyl starting material to effect further isomerization. The separation is effected either by cooling to crystallize out O,S-dialkyl isomer or by evaporating off the O,O-dialkyl starting material.

REFERENCES:
patent: 3639547 (1972-02-01), Magee

Affiliated with

Also associated with

Rating

Preparation of O,S-dialkyl phosphoroamidothioates 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 O,S-dialkyl phosphoroamidothioates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of O,S-dialkyl phosphoroamidothioates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2110201