title: Palladium(II)-Catalyzed meta-C-H Olefination: Constructing Multisubstituted Arenes through Homo-Diolefination and Sequential Hetero-Diolefination.
abstract: Divinylbenzene derivatives represent an important class of molecular building blocks in organic chemistry and materials science. Reported herein is the palladium-catalyzed synthesis of divinylbenzenes by meta-C-H olefination of sulfone-based arenes. Successful sequential olefinations in a position-selective manner provided a novel route for the synthesis of hetero-dialkenylated products, which are difficult to access using conventional methods. Additionally, 1,3,5-trialkenylated compounds can be generated upon successful removal of the directing group.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400 076 (India).
authors.forename: Milan
authors.initials: M
authors.lastname: Bera
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400 076 (India).
authors.forename: Arun
authors.initials: A
authors.lastname: Maji
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400 076 (India).
authors.forename: Santosh K
authors.initials: SK
authors.lastname: Sahoo
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400 076 (India). dmaiti@chem.iitb.ac.in.
authors.forename: Debabrata
authors.initials: D
authors.lastname: Maiti
keywords: CH activation; olefination; palladium; sulfur; synthetic methods