A modular synthesis of chiral aminoindanol-derived imidazolium salts
作者:Justin R. Struble、Jeffrey W. Bode
DOI:10.1016/j.tet.2008.03.072
日期:2008.7
N-substituted chiralimidazoliumsalts derived from (1R,2S)-(+)-1-amino-2-indanol is described. A wide range of amines are amenable to late stage introduction of the N-substituent to provide N-aryl, N-alkyl, and N-amino imidazoliumsalts, which serve as precursors to chiralN-heterocycliccarbenes (NHCs). A multi-gram synthesis of the N-mesityl derivative provides an important imidazolium salt for ongoing
Synthesis of an <i>N</i>-Mesityl Substituted Chiral Imidazolium Salt for NHC-Catalyzed Reactions
作者:Justin R. Struble、Juthanat Kaeobamrung、Jeffrey W. Bode
DOI:10.1021/ol800006m
日期:2008.3.1
A new synthetic approach to chiralimidazoliumsalts makes possible the first synthesis of an N-mesityl substituted, aminoindanol-derived N-heterocycliccarbeneprecursor, 1.ClO4. The successful synthesis allows the first direct comparison of otherwise identical imidazolium and triazolium precursors across a number of NHC-catalyzed processes. These studies confirm striking differences in reactivity