fluorescence with the increase in water content for various solvents (polar, less polar, protic and aprotic solvents), which can be attributed to the suppression of PET due to the formation of fluorescent ionic structures OM-1a or OM-2a by hydrolysis. For OU-1 and OU-2, on the other hand, there is no appreciable change in fluorescence intensity upon addition of water to the solution. We propose that
Synthesis of Amines with Pendant Boronic Esters by Borrowing Hydrogen Catalysis
作者:Winson M. J. Ma、Tony D. James、Jonathan M. J. Williams
DOI:10.1021/ol402271a
日期:2013.9.20
Amine alkylation reactions of alcohols have been performed in the presence of boronic ester groups to provide products which are known to have use as molecular sensors. The boronic ester moiety could be present in either the alcohol or amine starting material and was not compromised in the presence of a ruthenium catalyst.