433299-73-1

Upstream product

• 491-38-3 1-benzopyran-4(4H)-one 
• 288143-37-3 ((2E,4Z)-5-Ethoxy-3,5-bis-trimethylsilanyloxy-penta-2,4-dienyl)-benzene 

Relevant academic research and scientific papers

Domino reactions of 1,3-bis-silyl enol ethers with benzopyrylium triflates: Efficient synthesis of fluorescent 6H-benzo[c]chromen-6-ones, dibenzo[c,d]chromen-6-ones, and 2,3-dihydro-1H-4,6-dioxachrysen-5-ones

The condensation of 1,3-bissilyl enol ethers with benzopyrylium triflates, generated in situ by the reaction of chromones with Me3SiOTf, afforded functionalized 2,3-dihydrobenzopyrans; treatment of the latter with NEt3, or BBr3

Efficient synthesis of biaryl lactones by domino retro-Michael-aldol-lactonization reactions

Biaryl lactones were prepared by novel domino x retro-Michael-aldol-lactonization reactions of 2,3-dihydropyrans.