145644-82-2

Upstream product

• 35356-70-8 Methyl 2-acetamidoacrylate 
• 57707-91-2 (1S,2R,5S)-8-(+)-phenylmenthol 
• 905733-11-1 2-methyl-4-methylene-5(4H)-oxazolone 
• 65253-04-5 (-)-8-phenylmenthol 
• 5429-56-1 N-Acetamidoacrylic acid 

Downstream Products

• 176965-94-9 (S)-1-Acetylamino-cyclohex-3-enecarboxylic acid (1R,2S,5R)-5-methyl-2-(1-methyl-1-phenyl-ethyl)-cyclohexyl ester 
• 905733-12-2 (1'R,3'R,4'S)-8'-phenylmenthyl (1S,2S,4S)-2-acetylamino-bicyclo[2.2.1]hept-5-ene-2-carboxylate 
• 905733-13-3 (1'R,3'R,4'S)-8'-phenylmenthyl (1R,2S,4R)-2-acetylamino-bicyclo[2.2.1]hept-5-ene-2-carboxylate 
• 131177-83-8 (1S,2S,4S)-(-)-2-acetylamino-bicyclo[2.2.1]hept-5-ene-2-carboxylic acid 

Relevant academic research and scientific papers

An efficient synthesis of new diastereomeric enantiopure 1-aminocyclopentane-1,2,4-tricarboxylic acids

Novel 1-aminocyclopentane-1,2,4-tricarboxylic acids 11 and 14 containing the glutamic acid skeleton were prepared as two diastereomers characterized by having the carbonyl groups in positions two and four cis to each other and trans with respect to the 1-carboxylic group and as all cis relationship, respectively. The reaction sequences, that is, Diels-Alder reaction to give norbornene cycloadducts, oxidative cleavage of the double bond of the cycloadducts, ensured the proper stereochemistry of both diastereomers. Each diastereomer was prepared in enantiopure form starting from exo- and endo-2-amino-norbornene-2-carboxylic acid derivatives 5 and 6 obtained through a very efficient asymmetric synthesis.

Synthesis of Optically Active N-Acetyldehydroalanine Esters

Reaction of N-acetyldehydroalanine methyl ester (methyl 2-acetamido-2-propenoate) with dimethylaluminium esters 2a-f gave the corresponding optically active N-acetyldehydroalanine esters 3a-f.