Phosphine-containing Lewis base catalyzed cyclization of benzofuranone type electron-deficient alkenes with allenoates: a facile synthesis of spirocyclic benzofuranones

Xin Li, Feng Wang, Nan Dong, Jin-Pei Cheng
  • Organic & Biomolecular Chemistry, January 2013, Royal Society of Chemistry
  • DOI: 10.1039/c3ob27288e
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