One-Pot Synthesis of Alkyl 4-alkyl-2,8-dioxo-2H,8H-pyrano[2,3- f]chromene-10-carboxylates and Alkyl 2(E)-3-[(4-alkyl-2-oxo-2H-chromen- 7-yl)oxy]acrylates

Title:One-Pot Synthesis of Alkyl 4-alkyl-2,8-dioxo-2H,8H-pyrano[2,3- f]chromene-10-carboxylates and Alkyl 2(E)-3-[(4-alkyl-2-oxo-2H-chromen- 7-yl)oxy]acrylates

Volume: 12 Issue: 1

Author(s): Sakineh Asghari, Robabeh Baharfar, Reza Mohammadian and Samaneh Ahangar Darabi

Affiliation:

Keywords: Acetylenic esters, 7-Hydroxy coumarin derivatives, One-pot synthesis, Triphenylphosphine.

Abstract: We report the synthesis of novel alkyl 4-alkyl-2,8-dioxo-2H,8H-pyrano[2,3-f]chromene-10-carboxylates by the reaction of 7-hydroxy coumarins and dialkyl acetylenedicarboxylates in the presence of triphenylphosphine, when alkyl propiolates were employed O-vinylated coumarin derivatives were obtained.

Cite this article as:

Asghari Sakineh, Baharfar Robabeh, Mohammadian Reza and Ahangar Darabi Samaneh, One-Pot Synthesis of Alkyl 4-alkyl-2,8-dioxo-2H,8H-pyrano[2,3- f]chromene-10-carboxylates and Alkyl 2(E)-3-[(4-alkyl-2-oxo-2H-chromen- 7-yl)oxy]acrylates, Letters in Organic Chemistry 2015; 12 (1) . https://dx.doi.org/10.2174/1570178612666141217224100