3969-04-8

Upstream product

• 951-87-1 rac-1,2-diphenylethylene-1,2-diamine 
• 541-41-3 chloroformic acid ethyl ester 
• 4113-66-0 2-ethoxy-4,5-diphenyl-oxazole 
• 501-65-5 diphenyl acetylene 
• 3969-03-7 1,2-Bis-ethoxycarbonylimino-1,2-diphenyl-ethan 

Downstream Products

• 22751-68-4 (+/-)-N,N'-dimethyl-1,2-diphenyl-1,2-ethylenediamine 
• 135075-68-2 (2S,3S,4S,5R)-3-((4S,5S)-1,3-Dimethyl-4,5-diphenyl-imidazolidin-2-yl)-5-phenyl-pyrrolidine-2,4-dicarboxylic acid 2-tert-butyl ester 4-methyl ester 
• 135075-67-1 (2S,3S,4S,5R)-3-((4S,5S)-1,3-Dimethyl-4,5-diphenyl-imidazolidin-2-yl)-5-phenyl-pyrrolidine-2,4-dicarboxylic acid dimethyl ester 
• 135075-64-8 Methyl (4RS,5RS)-(E)-3-(1,3-Dimethyl-4,5-diphenylimidazolidin-2-yl)propenoate 

Relevant academic research and scientific papers

Diastereoselective Cycloaddition of N-Lithiated Azomethine Ylides to (E)-α,β-Unsaturated Esters Bearing a C2-Symmetric Imidazolidine Chiral Controller

The 1,3-dipolar cycloaddition of N-metalated ylides to chiral (E)-3-(1,3-disubstituted 4,5-diphenylimidazolidin-2-yl)propenoates proceeded highly diastereoselectively.The previously unknown absolute configuration of optically pure 1,2-dianilino-1,2-diphenylethane was determined from the absolute configuration of the cycloadducts.What diastereotopic olefin face of the α,β-unsaturated ester was attacked by the ylide was found to depend dramatically upon the nature of N substituents of the chiral controller as well as upon the bulkiness of the ester moiety of the ylide.