7290-25-7

Upstream product

• 106-44-5 p-cresol 
• 621-59-0 isovanillin 
• 1122-91-4 4-bromo-benzaldehyde 
• 2748-98-3 3-(4-formylphenoxy)-4-methoxybenzaldehyde 
• 101110-74-1 methyl 4-(5'-formyl-2'-methoxyphenoxy)benzoate 
• 619-42-1 4-methoxycarbonylphenyl bromide 
• 22002-45-5 2-bromo-4-methylanisole 
• 6627-55-0 2-bromo-p-cresol 
• 160204-91-1 4-methoxy-3-p-tolyloxy-toluene 
• 57422-19-2 4-(Hydroxymethyl)phenyl 5-(hydroxymethyl)-2-methoxyphenyl ether 

Downstream Products

• 88901-70-6 C₅₃H₄₄N₄O₈ 
• 221308-11-8 2-amino-3-{3-[4-(2-amino-2-tert-butoxycarbonyl-ethyl)-phenoxy]-4-methoxy-phenyl}-propionic acid tert-butyl ester 
• 83118-65-4 Isodityrosine 

Relevant academic research and scientific papers

Enantioselective synthesis of dityrosine and isodityrosine via asymmetric phase-transfer catalysis

Application of N-anthracenylmethyl cinchonidinium chloride quaternary ammonium phase-transfer catalysts to the enantio- and diastereoselective synthesis of dityrosine and isodityrosine is reported. Under liquid-liquid phase-transfer conditions the key α-amino acid substituents are introduced with high enantioselectivity (≥95%e.e.).

Alkylations of chiral imidazolidinones derived from di- and triglycine and attempts at cyclisations to give cycloisodityrosines

Di- and triglycine derivatives (1-5) containing a 2-tert-butyl-1,3-imidazolidin-4-one moiety were prepared in rac. and enantiopure forms. By deprotonations with LiNR2 these imidazolidinones were converted to Li, Li2, and Li3/su