title: A [4 + 2] cycloaddition strategy to pyridine boronic ester derivatives.
abstract: Alkynylboronate cycloadditions of 1,4-oxazin-2-ones and 2-pyrazinones provide a direct and regioselective route to functionalized pyridine boronic ester derivatives.
authors.affiliation: Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, United Kingdom.
authors.forename: Patrick M
authors.initials: PM
authors.lastname: Delaney
authors.forename: Jianhui
authors.initials: J
authors.lastname: Huang
authors.forename: Simon J F
authors.initials: SJ
authors.lastname: Macdonald
authors.forename: Joseph P A
authors.initials: JP
authors.lastname: Harrity
mesh_terms: D000480:Alkynes / Q000737:chemistry; D001896:Boron Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D003500:Cyclization; D004952:Esters; D015394:Molecular Structure; D010078:Oxazines / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D011726:Pyridinium Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D013237:Stereoisomerism
chemical_list: D000480:Alkynes; D001896:Boron Compounds; D004952:Esters; D010078:Oxazines; D011725:Pyridines; D011726:Pyridinium Compounds