Indium-catalyzed [1 + n] annulation reaction between beta-ketoester and alpha,omega-diyne

Autor: Hayato, Tsuji, Iku, Tanaka, Kohei, Endo, Ken-Ichi, Yamagata, Masaharu, Nakamura, Eiichi, Nakamura
Rok vydání: 2009
Zdroj: Organic letters. 11(8)
ISSN: 1523-7052
Popis: A catalytic amount of In(NTf(2))(3) effects the inter- and intramolecular addition of a beta-ketoester to an alpha,omega-diyne to produce a 1,3-dimethylenecycloalkane derivative in a single step. This [1 + n] annulation reaction shows good functional group tolerance and allows the synthesis of five- to seven-membered carbo- and heterocyclic as well as spirocyclic structures in moderate to excellent yields.
Databáze: OpenAIRE