NHC-catalyzed formal [3 + 3] annulations of δ-acetoxy allenoates for the synthesis of 4<i>H</i>-pyran derivatives
Bai Shi, F.N. Jin, Qi Lv, Xinrong Zhou, Zhixiao Liao, Chenxia Yu, Kai Zhang, Changsheng Yao
Abstract
Herein, an N-heterocyclic carbene (NHC) catalyzed formal [3 + 3] annulation of δ-acetoxy allenoates with 1C,3O-bisnucleophiles for the construction of 4 H -(fused)pyrans has been developed.
Topics & Concepts
PyranChemistryCatalysisFormal synthesisStereochemistryOrganic chemistryN-Heterocyclic Carbenes in Organic and Inorganic ChemistryCatalytic Cross-Coupling ReactionsSynthetic Organic Chemistry Methods