title: Insertion of N-Tosylacetimidates/Acetimidamides onto Arynes via [2 + 2] Cycloaddition.
abstract: A novel insertion reaction of N-tosylacetimidates and N-tosylacetimidamides onto arynes via a benzocyclobutene intermediate followed by ring cleavage is developed to afford o-benzylbenzoic acid derivatives in good yields. Interestingly, the use of cyclic 2-sulfonyliminoindolines provided two distinct products such as azepanimines via [2 + 2] cycloaddition and indolamines via protonation based on solvent medium.
authors.affiliation: CSIR-Indian Institute of Chemical Technology , Division of Natural Product Chemistry, Hyderabad 500007, India.
authors.forename: Ramagonolla
authors.initials: R
authors.lastname: Kranthikumar
authors.affiliation: CSIR-Indian Institute of Chemical Technology , Division of Natural Product Chemistry, Hyderabad 500007, India.
authors.forename: Rambabu
authors.initials: R
authors.lastname: Chegondi
authors.affiliation: CSIR-Indian Institute of Chemical Technology , Division of Natural Product Chemistry, Hyderabad 500007, India.
authors.forename: Srivari
authors.initials: S
authors.lastname: Chandrasekhar