39621-73-3

Upstream product

• 63631-32-3 (S)-methyl 12-benzyl-2,2-dimethyl-4,7,10-trioxo-3-oxa-5,8,11-triazatridecan-13-oate 
• 31972-52-8 Boc-Gly-Gly-OH 
• 2577-90-4 methyl (2S)-2-amino-3-phenylpropanoate 

Downstream Products

• 80164-29-0 N-t-butoxycarbonylglycylglycyl-L-phenylalanyl-L-leucine methyl ester 
• 83380-12-5 (+)-(2S,6S,11S)-<(1,2,3,4,5,6-hexahydro-8-hydroxy-3,6,11-trimethyl-2,6-methano-3-benzazocin-4-yl)carbonyl>glycylglycylphenylalanylmethioninamide 
• 83380-12-5 (-)-(2R,6R,11R)-<(1,2,3,4,5,6-hexahydro-8-hydroxy-3,6,11-trimethyl-2,6-methano-3-benzazocin-4-yl)carbonyl>glycylglycylphenylalanylmethioninamide 
• 83380-11-4 glycylglycylphenylalanylmethioninamide hydrochloride 
• 75244-08-5 4-nitrobenzyl ester of N-benzyloxycarbonyl-O-benzyl-L-tyrosylglycylglycyl-L-phenylalanyl-L-leucine 
• 81649-51-6 hydrochloride of 4-nitrobenzyl ester of glycyl-glycyl-L-phenylalanyl-L-leucine 
• 58822-25-6 Leu-enkephalin 
• 75244-06-3 4-nitrobenzyl ester of N-t-butyloxycarbonylglycylglycyl-L-phenylalanyl-L-leucine 
• 68800-26-0 N-tert-butoxycarbonylglycylglycylphenylalanylmethionine 

Relevant academic research and scientific papers

Silver-catalyzed late-stage fluorination

Carbon-fluorine bond formation by transition metal catalysis is difficult, and only a few methods for the synthesis of aryl fluorides have been developed. All reported transition-metal-catalyzed fluorination reactions for the synthesis of functionalized arenes are based on palladium. Here we present silver catalysis for carbon-fluorine bond formation. Our report is the first example of the use of the transition metal silver to form carbon-heteroatom bonds by cross-coupling catalysis. The functional group tolerance and substrate scope presented here have not been demonstrated for any other fluorination reaction to date.

INFLUENCE OF ADDITIVES ON SUPPRESSION OF RACEMIZATION IN PEPTIDE SYNTHESIS. PART IV. THE USE OF ADDITIVES FOR SUPPRESSION OF RACEMIZATION IN PEPTIDE SYNTHESIS BY THE METHOD OF MIXED ANHYDRIDES

The changes of employing antiracemization additives in peptide synthesis by the method of mixed anhydrides were investigated by the Anderson and NMR tests.

Additives Based on Liquid Crystal Forming Structure Elements for Suppressing Racemization in Peptide Synthesis by the DCC- and Mixed Anhydrides Methods

A new type of additives suppressing racemization during peptide synthesis by the DCC- and mixed anhydrides methods are liquid crystal forming organic molecules or similar compounds with a specific long chain structure.The suppressing effect of the new additives was followed by the Anderson test, the modifid Young and n.m.r. tests.There was no racemization in a new Leu-enkephalin synthesis by the mixed anhydrides method with azoxybenzene as additive.