title: Rhodium-catalyzed [2+2+2] cycloaddition of oximes and diynes to give pyridines.
abstract: Oximes and diynes undergo efficient cycloaddition in the presence of a catalytic amount of a cationic rhodium(I)/dppf complex (see scheme). Spontaneous dehydration of the initially formed cycloadducts leads to the formation of a variety of substituted pyridines in moderate to good yields. The transformation could also be achieved in a one-pot procedure using aldehydes.
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, PR China.
authors.forename: Fen
authors.initials: F
authors.lastname: Xu
authors.forename: Chunxiang
authors.initials: C
authors.lastname: Wang
authors.forename: Dongping
authors.initials: D
authors.lastname: Wang
authors.forename: Xincheng
authors.initials: X
authors.lastname: Li
authors.forename: Boshun
authors.initials: B
authors.lastname: Wan