Coenzyme-inspired chemistry 1: the C-2 alkylation of 4,5-dihydroimidazoles
作者:Raymond C.F. Jones、John R. Nichols
DOI:10.1016/j.tet.2013.03.040
日期:2013.5
Alkylation of 4,5-dihydroimidazoles at C-2 is accomplished using a double umpolung of the reactivity of that position, via sulfenylation of a nucleophilic C-2 lithio-species and substitution using an alkyl nucleophile. Arylation via unexpected sulfide contraction from the arylsulfenylation products has also been demonstrated. Taken with dihydroimidazole cleavage protocols, this constitutes a tetra