Isoxazolines by Cycloadditions of Mesitonitrile Oxide with Benzothiophene S-Oxide and S,S-Dioxide. Structural Studies, Theoretical Explanations, and Kinetics

Article abstract of DOI:10.1021/jo00133a043

1,3-Dipolar cycloadditions of mesitonitrile oxide have been investigated with benzothiophene S-oxide and S,S-dioxide derivatives having a methyl, phenyl, piperidino, chloro, or bromo substituent on the active thiophene double bond.These dipolarophiles