Cys(Bz) was introduced into practice by Zervas et al in 1962 and was
mentioned as the most useful S-acyl protected derivative by Photaki, I. The
role of sulfur in amino acid protective group chemistry. In: Topics in
Sulfur Chemistry. Vol.1 (Senning, A., Ed.); G.Tieme: Stuttgart, 1976,
pp.111-183.
You may find a lot of relevant references together with experimental
details in this comprehensive review.
Regards
Igor
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Igor L. Rodionov
Laboratory of Peptide Chemistry
Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry
Pushchino, Moscow Region
142292, Russian Federation
E-mail: <rodionov@fibkh.serpukhov.su> or <Igor_Rodionov@iname.com>
Fax: (0967)-79-05-27
Phones: (0967) 73 54 42; private: (0967) 73 58 26