Tetrahedron Letters p. 6199 - 6202 (1991)
Update date:2022-08-11
Topics:
Jacobsen, Mogens Havsteen
Buchardt, Ole
Engdahl, Tom
Holm, Arne
A new one-pot procedure for the preparation of pentafluorophenyl and 3,4-dihydro-4-oxo-1,2,3-benzotriazine-3-yl esters of Nα-9-fluorenylmethyloxycarbonyl amino acids bearing no side chain protecting groups is described. The method gives the desired activated esters in high yield and purity without use of the highly allergenic DCC.
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(2013)Doi:10.1055/s-0039-1691600
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