948591-07-9

Upstream product

• 675124-86-4 (-)-methyl [(2S,3R)-3-amino-2-(benzyloxycarbonylamino)-5-phenyl]pentanoate 
• 79-04-9 chloroacetyl chloride 
• 675124-75-1 (+)-methyl [(2S,4R,5S,S_S)-1-benzyloxycarbonyl-2-phenyl-4-(2-phenethyl)-3-(p-tolylsulfinyl)-1,3-imidazolidin-5-yl]carboxylate 
• 596823-42-6 (+)-methyl [(2S,4S,5R,S_S)-2-phenyl-5-(2-phenylethyl)-1-(p-tolylsulfinyl)-1,3-imidazolidin-4-yl]carboxylate 
• 501-53-1 benzyl chloroformate 

Relevant academic research and scientific papers

Synthesis of enantiopure vicinal diaminoesters and ketopiperazines from N-sulfinylimidazolidines

A short and efficient synthesis of mono- and bicyclic ketopiperazines bearing methoxycarbonyl substituents is described. The route entails selective protection and solvolysis of N-sulfinylimidazolidines to provide vicinal diaminoesters with the nitrogen a