title: 5-Butyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-(2,4,6-trimethylphenyl)isoxazole.
abstract: A novel [3+2]-cycloaddition reaction of alkynylboronates and nitrile oxides gave the title compound, C(22)H(32)BNO(3), as a single regioisomer. The X-ray crystal structure analysis of this compound shows two independent molecules in the asymmetric unit, each with approximately coplanar isoxazole and boronate rings.
authors.affiliation: Department of Chemistry, University of Sheffield, Sheffield S3 7HF, England.
authors.forename: Joseph P A
authors.initials: JP
authors.lastname: Harrity
authors.forename: Harry
authors.initials: H
authors.lastname: Adams
authors.forename: Mark W
authors.initials: MW
authors.lastname: Davies
authors.forename: Robert A J
authors.initials: RA
authors.lastname: Wybrow
authors.forename: Christopher N
authors.initials: CN
authors.lastname: Johnson
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D006860:Hydrogen Bonding; D007555:Isoxazoles / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation
chemical_list: C455526:5-butyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3-(2,4,6-trimethylphenyl)isoxazole; D001896:Boron Compounds; D007555:Isoxazoles