A New and Efficient Synthesis of Substituted 2-Hydroxymethyl-2-methyl-2H-chromenes
作者:J. Y. Goujon、F. Zammattio、S. Pagnoncelli、Y. Boursereau、B. Kirschleger
DOI:10.1055/s-2002-19763
日期:——
A new and efficient three step procedure for the synthesis of functionalized 2H-chromenes 1 is described, starting from commercially available salicylaldehydes 2 and 2-methylpropenylmagnesium chloride 3, which involves catalytic acid-mediated intramolecular cyclization of phenolic epoxide 5 as the key step.