triethylamine in 1,4-dioxane; water 48 h; Ambient temperature;

trimethylsilyl trifluoromethanesulfonate; 4,4'-diphenylsulfide in trifluoroacetic acid T=0°C; 0.5 h; New peptide deprotection procedure: hard-soft acid-base concept; the role of soft bases (thioanisole, dimethylsulfide, diphenylsulfide) employed.; Product distribution;