3. 1260. Amino-acids and peptides. Part XXIV. The use of esters of 1-hydroxypiperidine and of other NN-dialkylhydroxylamines in peptide synthesis and as selective acylating agents B. O. Handford,J. H. Jones,G. T. Young,T. F. N. Johnson J. Chem. Soc. 1965 6814
4. Amino-acids and peptides. Part XXXIV. Anchimerically assisted coupling reactions: the use of 2-pyridyl thiolesters K. Lloyd,G. T. Young J. Chem. Soc. C 1971 2890