title: Novel pyridine-catalyzed reaction of dimethyl acetylenedicarboxylate with aldehydes: formal [2 + 2] cycloaddition leading to 2-oxo-3-benzylidinesuccinates.
abstract: [reaction: see text]. The 1,4-zwitterionic intermediate generated from pyridine and DMAD adds to aldehydes in a formal [2 + 2] manner, resulting in the facile synthesis of 2-oxo-3-benzylidinesuccinates.
authors.affiliation: Organic Chemistry Division, Regional Research Laboratory, CSIR, Trivandrum 695 019, India. gvn@csrrltrd.ren.nic.in
authors.forename: V
authors.initials: V
authors.lastname: Nair
authors.forename: A R
authors.initials: AR
authors.lastname: Sreekanth
authors.forename: A U
authors.initials: AU
authors.lastname: Vinod