Jamie Simpson

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Organization: Monash University
Department: Medicinal Chemistry and Drug Action
Title:
Co-reporter:Bradley C. Doak, Martin J. Scanlon, and Jamie S. Simpson
Organic Letters 2011 Volume 13(Issue 3) pp:537-539
Publication Date(Web):January 12, 2011
DOI:10.1021/ol102852z
Bis(1,2,3-triazole)s have attracted recent interest as coordinating ligands for transition metals. Here we report a rapid, modular method for the synthesis of 1,1′-disubstituted-4,4′-linked unsymmetrical bis(1,2,3-triazole)s. The method employs sequential copper catalyzed azide−alkyne cycloaddition and deprotection steps on a monosilylbutadiyne. TMS (trimethylsilyl) and TIPS (triisopropylsilyl) were both investigated with TIPS being the preferred protecting group due to increased stability. The reactions were amenable to one-pot synthesis, and an optimized one-pot, three-step procedure was developed.
(1R,2R)-2-(4'-(3-Phenylureido)-[1,1'-biphenyl]-4-carbonyl)cyclopentanecarboxylic acid
Benzenemethanamine,N-methyl-4-(2-thiazolyl)-
Benzenemethanamine,N-methyl-4-(3-thienyl)-
2-Thiophenemethanol,5-(2-furanyl)-
2-(2-Amino-4-(p-tolyl)thiazol-5-yl)acetic acid
3-(2-amino-4-methylthiazol-5-yl)-4-methyl-1H-1,2,4-triazole-5(4H)-thione
1-methyl-N-1,3-thiazol-2-yl-1H-pyrazole-5-carboxamide
2-Amino-3-benzylthiazol-3-ium chloride