I did several test to check how the Fmoc deprotection take place...using piperidine (10 % and 20%) and also non-nucleophilic base DBU (2 %)...when I analyze by LC/MS I detect a new peak with the same intensity of the main product. It seems that is a side reaction...It has a...
acid; (S)-N-Fmoc-piperidine-2-carboxylic acid; 1-[(9H-Fluoren-9-ylmethoxy)carbonyl]-L-pipecolic Acid; 1-Fmoc-L-pipecolic Acid; FMOC-B-HOMO-PRO-OH; Fmoc-Pip-OH; Fmoc-Pip-OH,(S)-1-Fmoc-piperidine-2-carboxylic acid, N-Fmoc-L-pipecolinic acid; N-Fmoc-(2S)-piperidinecarboxylic ...