Simple and convenient synthesis of tert-butyl ethers of Fmoc-serine, Fmoc-threonine, and Fmoc-tyrosine

…, MA Blaskovich, H Groenevelt, GA Lajoie

Index: Adamson, J. Gordon; Blaskovich, Mark A.; Groenevelt, Hester; Lajoie, Gilles A. Journal of Organic Chemistry, 1991 , vol. 56, # 10 p. 3447 - 3449

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Citation Number: 37

Abstract

associated with the ionizations of the symmetric (ns,+ nsz) and antisymmetric (ns,-ns,) combinations are thus observed at 8.60 and 9.35 eV, respectively (the first one not very far from the corresponding one of 7 at 8.78 eV). On the other hand, the no lone pair ionization should be observed at the same energetic level in 7 and 8: 9.50 eV. The greater intensity of the 9.35-9.50-eV band of 8 is then accounted for by the attribution of two ionizations ...