88867-97-4

Upstream product

• 73096-27-2 N-(4-chlorophenylsulfonyl)-(S)-proline 
• 98-60-2 4-chlorobenzenesulfonyl chloride 
• 147-85-3 L-proline 
• 73096-27-2 1-(4-Chloro-benzenesulfonyl)-pyrrolidine-2-carboxylic acid 

Downstream Products

• 88867-90-7 (S)-1-(4-Chloro-benzenesulfonyl)-pyrrolidine-2-carboxylic acid ((R)-1-phenyl-ethyl)-amide 
• 73096-27-2 N-(4-chlorophenylsulfonyl)-(S)-proline 
• 255053-75-9 (S)-9-{N-(p-chlorophenylsulfonyl)prolinyl}-β-carboline 
• 88867-91-8 (S)-1-(4-Chloro-benzenesulfonyl)-pyrrolidine-2-carboxylic acid ((S)-1-phenyl-ethyl)-amide 

Relevant academic research and scientific papers

Preparation of both enantiomers of 1-allyl-1,2,3,4-tetrahydro-β-carboline using allyltin reagents and a chiral auxiliary derived from L-proline

β-Carboline, which had an acyl group derived from L-proline at the 9-position, reacted with allyltributyltin and 2,2,2-trichloroethyl chloroformate to afford an 1-allyl-1,2-dihydro-β-carboline derivative in a diastereoselective manner. The chiral acyl group at N-9 was readily eliminated by aqueous alkali to give a corresponding carboxylic acid. The formed 1-allyl-1,2-dihydro-β-carboline was transformed via two reduction steps to 1-allyl-1,2,3,4-tetrahydro-β-carboline in high ee. When the allylation was carried out using tetraallyltin instead of allyltributyltin, the stereoselectivity was reversed, and the antipode of the allyl adduct was obtained in high yield and ee in the presence of tin(IV) tetraiodide. Thus, it was found that both enantiomers of 1-allyl-β-carboline were obtained in good enantioselectivities by the use of the same chiral auxiliary.

Synthesis and Liquid Chromatographic Evalution of Some Chiral Derivatizing Agents for Resolution of Amine Enantiomers

A series of 1-prolyl chlorides were synthesized and evaluated as chiral derivatizing agents for the liquid chromatographic analysis of enantiomeric amines.The diastereomeric 1-prolinamides showed st