title: Isolable and well-defined butadienyl organocopper(I) aggregates: facile synthesis, structural characterization, and reaction chemistry.
abstract: Four types of alkenyl organocopper(I) aggregates linked by 1,3-butadienyl and/or 1,3,5,7-octatetraenyl moieties were selectively realized in good isolated yields. All these organocopper(I) aggregates were structurally characterized by single-crystal X-ray structural analysis. These unprecedented aggregates, stabilized by multiple Cu-Cu interactions and the conjugated 1,3-butadienyl or 1,3,5,7-octatetraenyl bridges, could undergo controlled structural transformations. The 1,4-dicopper 1,3-butadienyl aggregate 3 could be efficiently transformed to aggregate 2, while LiI could disaggregate the 1,3-butadienyl-1,3,5,7-octatetraenyl aggregate 4 to 1,3,5,7-octatetraenyl aggregate 5 and 1,3-butadienyl aggregate 2. Preliminary reaction chemistry and synthetic applications of these organocopper(I) aggregates were also investigated.
authors.affiliation: Beijing National Laboratory for Molecular Sciences (BNLMS), and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University , Beijing 100871, China.
authors.forename: Weizhi
authors.initials: W
authors.lastname: Geng
authors.forename: Junnian
authors.initials: J
authors.lastname: Wei
authors.forename: Wen-Xiong
authors.initials: WX
authors.lastname: Zhang
authors.forename: Zhenfeng
authors.initials: Z
authors.lastname: Xi