787623-89-6

Upstream product

• 51591-75-4 cis-1,3-dibenzyl-2-oxoimidazolidine-4,5-dicarboxylic acid 
• 46755-94-6 (S)-1,1-diphenyl-1,2-propanediol 
• 26339-42-4 (4S,5R)-1,3-dibenzyl-1H-furo[3,4-d]imidazole-2,4,6-trione 

Downstream Products

• 28092-62-8 (3aS,6aR)-1,3-dibenzyltetrahydro-1H-furo[3,4-d]imidazole-2,4-dione 
• 46755-94-6 (S)-1,1-diphenyl-1,2-propanediol 

Relevant academic research and scientific papers

A PROCESS FOR THE STEREOSELECTIVE SYNTHESIS OF LACTONES

A process is described for the stereoselective synthesis of a chiral lactone which can be used as an intermediate in the synthesis of biotin. The process includes a reaction sequence in which a cyclic meso-carboxylic acid anhydride is converted with the aid of a chiral alcohol with ring opening into a dicarboxylic acid monoester. With respect to the dicarboxylic acid monoester obtained from the cyclic meso-carboxylic acid anhydride and the chiral alcohol, the reaction proceeds diastereoselectively. The reaction is performed in the presence of a specific catalyst improving the diastereomeric purity of the dicarboxylic acid monoester.