84569-77-7Relevant articles and documents
Syntheses of Sterically Hindered Peptides and Depsipeptides by Means of an Acid Chloride Procedure with 2-Phosphonioethoxycarbonyl (Peoc) Amino Acids and Hydroxy Acids
Kunz, Horst,Bechtolsheimer, Hans-Heinrich
, p. 2068 - 2078 (2007/10/02)
2-(Triphenylphosphonio)ethoxycarbonyl (Peoc) amino acids 1 and hydroxy acids 5 are converted by treatment with oxalyl chloride into the corresponding acid chlorides 2 and 6 which are stable at room temperature.Sterically hindered amide bonds, for instance