A. Das, R. Devi, S. Das
Nov 1, 2018
Citations
0
Influential Citations
8
Citations
Journal
Tetrahedron Letters
Abstract
Abstract Boron trifluoride–etherate (BF3·OEt2) in 2,2,2‐trifluoroethanol (TFE) was found to be a highly efficient promoter system for the intramolecular alkyne–aldehyde metathesis of o-(3-arylpropargyloxy)benzaldehydes. The reaction produces the corresponding 3-aroyl-2H-chromenes in excellent yields under metal-free conditions.