351024-48-1

Upstream product

• 57362-64-8 1-phenyl-4-(triphenylphosphanylidene)butane-1,3-dione 
• 643-79-8 o-phthalic dicarboxaldehyde 
• 99564-79-1 1-phenyl-1,3-bis(trimethylsilyloxy)-1,3-butadiene 

Relevant academic research and scientific papers

Efficient synthesis of functionalized 4,5-benzotropones by regioselective cyclization of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with phthalic dialdehyde

The reaction of 1,3-bis(trimethylsiloxy)-1,3-butadienes with phthalic dialdehyde resulted in regioselective formation of functionalized 4,5-benzotropones.

Synthesis of 4,5-Benzotropones by Cyclization of 1,3-Bis-Silyl Enol Ethers with 1,2-Dialdehydes

The cyclization of 1,3-bis-silyl enol ethers or (2,4 -dioxobutylidene)triphenylphosphoranes with phthalic dialdehyde allowed a convenient synthesis of a variety of 4,5-benzotropones. The hydrogenation of benzotropones afforded functionalized benzocycloheptanones which were transformed into tricyclic butenolides.