1259320-64-3

Upstream product

• 486460-21-3 3-trifluoromethyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrazine 
• 1259320-66-5 methyl 4-oxo-2-(2,4,5-trifluorobenzyl)-4-(3-trifluoromethyl-5,6-dihydro[1,2,4]triazolo[4,3-a]-7(8H)-pyrazinyl)-butyrate 
• 1259320-63-2 4-oxo-2-(2,4,5-trifluorobenzyl)-4-(3-trifluoromethyl-5,6-dihydro[1,2,4]triazolo[4,3-a]-7(8H)-pyrazinyl)butyric acid 

Downstream Products

• 486460-23-5 (R)-tert-butyl 4-oxo-4-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-1-(2,4,5-trifluorophenyl)butan-2-ylcarbamate 
• 486460-32-6 sitagliptin 

Relevant academic research and scientific papers

For preparing sitagliptin intermediate and its preparation method and application (by machine translation)

The invention relates to the field of organic chemistry, in particular to a process for preparing a sitagliptin intermediate and its preparation method and application, the intermediate A has the following structure: Wherein R is hydrogen atom or (by machine translation)

Process for the preparation of sitagliptin

A process for the preparation of 2(R)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]-7(8H)-pyrazinyl]-1-(2,4,5-trifluorophenyl)-2-butanamine and intermediates useful for the synthesis thereof.

PROCESS FOR THE PREPARATION OF SITAGLIPTIN

A process for the preparation of 2(R)-4-oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]-7(8H)-pyrazinyl]-1-(2,4,5-trifluorophenyl)-2-butanamine and intermediates useful for the synthesis thereof.