Raluca Fratila

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Name:
Organization: University of Twente
Department: Departamento de Química Orgánica-I
Title:
Co-reporter:Jesus M. Aizpurua, Itxaso Azcune, Raluca M. Fratila, Eva Balentova, Maialen Sagartzazu-Aizpurua and Jose I. Miranda
Organic Letters 2010 Volume 12(Issue 7) pp:1584-1587
Publication Date(Web):March 2, 2010
DOI:10.1021/ol1003127
Unsymmetrically 1,1′-disubstituted 4,4′-bis-1H-1,2,3-triazoles 4 have been prepared from 4-ethynyl-1,2,3-triazoles 5 and azides. Following a “double-click” strategy, two complementary approaches were implemented for the preparation of the key 4-ethynyltriazole intermediates 5: (a) the stepwise Swern oxidation/Ohira−Bestman alkynylation of readily available 4-hydroxymethyl-1,2,3-triazoles 8 and (b) the stepwise cycloaddition of TMS-1,4-butadiyne 9. The method is highlighted by its compatibility with orthogonally protected and functionalized saccharide−peptide hybrids and its ability to be extended to the trisubstituted counterparts 12.
Polyamidoamine dendrimer, Generation 1.0
Poly(oxy-1,4-butanediyloxycarbonyl-1,4-phenylenecarbonyl)
Benzeneethanamine,N-ethyl-a-methyl-3-(trifluoromethyl)-