N. Münster, P. Nikodemiak, U. Koert
Aug 18, 2016
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0
Influential Citations
37
Citations
Journal
Organic letters
Abstract
Ethynylcyclooctynes and diazides were synthesized and applied for a chemoselective sequence of copper(I)-catalyzed azide-alkyne cycloadditions and strain-promoted azide-alkyne cycloadditions. Chemoselectivity within the reaction sequence was achieved by balancing three factors: Cu-catalysis/ring strain/steric shielding. A cholic acid derived triazide was subjected to the cycloaddition sequence as a model system for a layer-by-layer synthesis on surfaces.