Efficient Tandem Morita-Baylis-Hillman/Double Cross-Aldol Reaction between Cyclic Enones and Formaldehyde Promoted by N-Methylpyrrolidine
作者:Krassimira P. Guerra、Carlos A. M. Afonso
DOI:10.1002/ejoc.201001612
日期:2011.4
The Lewis base N-methylpyrrolidine acts in water as an efficient promoter of tandemreactionsbetween 2 cyclopenten-1-one and aqueous formaldehyde. The reaction pathway includes, as consecutive independent steps, a MBH reaction and a doublecross-aldolreaction to furnish the new 2,5,5-tris(hydroxymethyl)-2-cyclopenten-1-one in excellent yield. A range of cyclicenones and 4-nitrobenzaldehyde undergo