62129-25-3

Upstream product

• 108-24-7 acetic anhydride 
• 56406-50-9 3-nitrobenzamidine hydrochloride 
• 619-24-9 3-nitrobenzonitrile 
• 645-09-0 3-nitrobenzamide 
• 57508-53-9 3-nitrobenzenecarboximidic acid ethyl ester monohydrochloride 
• 3459-99-2 3-nitrobenzamidine 

Downstream Products

• 1361032-69-0 3-methyl-5-(3-nitrophenyl)-1-phenyl-1H-1,2,4-triazole 
• 145878-39-3 3-amino-N-(acetyl)phenylcarboxamide 

Relevant academic research and scientific papers

Ultrasound-assisted catalytic synthesis of acyclic imides in the presence of p-toluenesulfonic acid under solvent-free conditions

A rapid and convenient preparation of acyclic imides by the reaction of aliphatic and aromatic nitriles with acyclic carboxylic anhydride in the presence of catalytic amounts of p-toluenesulfonic acid under thermal or ultrasonic conditions is reported. The advantages of this procedure are moderate reaction times, good to excellent yields, and use of an inexpensive and ecofriendly catalyst. The reaction of nitriles with aliphatic anhydrides proceeds under thermal conditions, while they are accelerated by the use of ultrasound irradiation.

Efficient synthesis of symmetrical and unsymmetrical acyclic imides catalyzed by reusable 12-tungstophosphoric acid under thermal conditions and microwave irradiation

An efficient and environmentally friendly procedure has been developed for the synthesis of symmetrical and unsymmetrical acyclic imides by the reaction of nitriles with acyclic anhydrides in the presence of catalytic amounts of 12-tungstophosphoric acid (H3PW12O40) under thermal conditions and microwave irradiation. It was found that microwave improves the yields and significantly reduces the reaction times. Furthermore, the catalyst could be recovered and reused several times without decrease in its activity.

CHOLECYSTOKININ ANTAGONISTS

Benzodiazepine analogs of the formula: STR1 are disclosed which are antagonists of gastrin and cholecystokinin (CCK).