3-Phenyl-10-(2,3,4-trimethoxyphenyl)-9,10-dihydro-4H,8H-pyrano [2,3-f]chromene-4,8-dione

An efficient telescoped method for synthesis of 3-phenyl-10-(2,3,4-trimethoxyphenyl)-9,10-dihydro-4H,8H-pyrano[2,3-f]chromene-4,8-dione was elaborated. The presented protocol includes the one-pot multicomponent reaction of 7-hydroxy-3-phenyl-4H-chromen-4-one, 2,3,4-trimethoxybenzaldehyde and Meldrum's acid. Advantages of this method are the application of readily available starting reagents, atom economy and easy procedure of preparation and purification of the target product. The structure of the synthesized polycyclic compound was proved by H-1, C-13-NMR, IR spectroscopy and high-resolution mass spectrometry with electrospray ionization (ESI-HRMS).

Automated summary

An efficient method for the telescoped synthesis of a novel polycyclic compound was developed using a one-pot multicomponent reaction. The advantages of this method include the use of readily available starting reagents, high atom economy, and a simple procedure for preparation and purification of the target product.