2,2'-[(1E,1'E)-{[Hexa-2,4-diyne-1,6-diylbis(oxy)]bis(2,1-phenylene)}bis(ethene-2,1-diyl)]bis(4H-chromen-4-one)

2-Styrylchromones (2-SCs) are interesting compounds for their biological properties as well as versatility as starting materials for further transformations. Herein, we disclose a new 2-SC derivative-2,2'-[(1E,1'E)-{[hexa-2,4-diyne-1,6-diylbis(oxy)]bis(2,1-phenylene)}bis(ethene-2,1-diyl)]bis(4H-chromen-4-one)-which is a dimeric compound formed by two units of 2-SC linked through a 1,3-diyne moiety. It was obtained in excellent yield (96%) through the copper-catalyzed homocoupling of two molecules of O-propargyl-2-SC. Its structure was unveiled by 1D (H-1 and C-13) and 2D (HSQC and HMBC) NMR techniques together with HRMS.

Automated summary

We report a new 2-SC derivative, 2,2'-[(1E,1'E)-{[hexa-2,4-diyne-1,6-diylbis(oxy)] bis(2,1-phenylene)} bis(ethene-2,1-diyl)] bis(4H-chromen-4-one), which is a dimeric compound formed by linking two units of 2-SC through a 1,3-diyne moiety. The compound was obtained with excellent yield (96%) through the copper-catalyzed homocoupling of two molecules of O-propargyl-2-SC. Its structure was characterized by 1D (H-1 and C-13) and 2D (HSQC and HMBC) NMR techniques as well as HRMS.