title: Selective oxygenation of alkynes: a direct approach to diketones and vinyl acetate.
abstract: Arylalkynes can be converted into α-diketones with the use of a copper catalyst, and also be transformed into vinyl acetates under metal-free conditions, both in the presence of PhI(OAc)2 as an oxidant at room temperature. A series of substituted α-diketones were prepared in moderate to good yields. A variety of vinyl halides could be regio- and stereo-selectively synthesized under mild conditions, and I, Br and Cl could be all easily embedded into the alkynes.
authors.affiliation: The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China. xiaxf@jiangnan.edu.cn.
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Xia
authors.forename: Zhen
authors.initials: Z
authors.lastname: Gu
authors.forename: Wentao
authors.initials: W
authors.lastname: Liu
authors.forename: Ningning
authors.initials: N
authors.lastname: Wang
authors.forename: Haijun
authors.initials: H
authors.lastname: Wang
authors.forename: Yongmei
authors.initials: Y
authors.lastname: Xia
authors.forename: Haiyan
authors.initials: H
authors.lastname: Gao
authors.forename: Xiang
authors.initials: X
authors.lastname: Liu
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D018360:Crystallography, X-Ray; D007659:Ketones / Q000138:chemical synthesis* / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry*; D014753:Vinyl Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D000480:Alkynes; D007659:Ketones; D014753:Vinyl Compounds; C011566:vinyl acetate; D010100:Oxygen