Process for the preparation of substituted N-(aryl)-1,2,4-triazo

Details Process for the preparation of substituted N-(aryl)-1,2,4-triazo Process for the preparation of substituted N-(aryl)-1,2,4-triazo

1991-10-08

1993-01-05

Daus, Donald G.

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

Organic compounds

Pteroyl per se or having -c-, wherein x is chalcogen, bonded...

C07D48704

Patent

active

051772060

ABSTRACT:
The preparation of N-(aryl)-1,2,4-triazolopyrimidine-2-sulfonamides by the coupling of substituted 1,2,4-triazolopyrimidine-2-sulfonyl halides with aryl amines of substantially reduced nucleophilic reactivity is facilitated by conducting the reaction in the presence of a pyridine base and a catalytic amount of dimethyl sulfoxide.

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patent: 5008352 (1991-04-01), Hendy
patent: 5010195 (1991-04-01), VanHeertum et al.
Cremlyn et al., Phosphorus and Sulfur, vol. 6, pp. 413-419 (1979).
Handy et al., Chem. Abstr., vol. 112 entry 100261(k) )1989).
Spince et al., Chem. Abstr., vol. 105 entry 17623(q) (1986).
Cremlyn et al., Chem. Abstr., vol. 91 entry 140463a (1979).

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