title: Dioxane dibromide mediated bromination of substituted coumarins under solvent-free conditions.
abstract: An efficient solvent-free protocol for regioselective bromination of substituted coumarins has been developed by using dioxane dibromide as the solid brominating agent. The efficacy of the solvent-free protocol has been established. The effects of the electronic nature and location of the substituents on the outcome of the reaction have been rationalized with a proposed mechanism.
authors.affiliation: Khorop High School, Howrah, West Bengal, India.
authors.forename: Subrata Kumar
authors.initials: SK
authors.lastname: Chaudhuri
authors.forename: Sanchita
authors.initials: S
authors.lastname: Roy
authors.forename: Sanjay
authors.initials: S
authors.lastname: Bhar