title: A novel and facile synthesis of dienals and substituted 2H-pyrans via the Vilsmeier reaction of alpha-oxo-ketenedithioacetals.
abstract: A novel and facile synthesis of dienals (3a, 3b) and substituted 2H-pyrans (4c, 4d) from a series of [small alpha]-oxo ketenedithioacetals containing a methyl group adjacent to the carbonyl group (1a-d)via the Vilsmeier reaction has been developed and a mechanism for the reactions has been proposed.
authors.affiliation: Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.
authors.forename: Yingchun
authors.initials: Y
authors.lastname: Liu
authors.forename: Dewen
authors.initials: D
authors.lastname: Dong
authors.forename: Qun
authors.initials: Q
authors.lastname: Liu
authors.forename: Yimei
authors.initials: Y
authors.lastname: Qi
authors.forename: Zuo
authors.initials: Z
authors.lastname: Wang