18766-08-0

Upstream product

• 59485-34-6 1,2-bis(2-bromophenyl)ethane 
• 80-10-4 diphenylsilyl dichloride 
• 108474-32-4 (E/Z)-α,α'-dibromostilbene 

Downstream Products

• 31101-69-6 5,5-diphenyl-5H-dibenzo[b,f]silepine 

Relevant academic research and scientific papers

A new strategy for hyperconjugative antiaromatic compounds utilizing negative charges: a dibenzo[b,f]silepinyl dianion

Herein we propose a new strategy for hyperconjugative antiaromatic compounds utilizing negative charges and design the 5,5-diphenyldibenzo[b,f]silepinyl dianion (pseudo 16π-electron system) in which negative hyperconjugation occurs between the anionic π-cloud and the σ*(Si-Ph) orbital. Essentially, reduction of the dibenzo[b,f]silepin with lithium readily generated a dilithium salt of the dibenzosilepinyl dianion, and its hyperconjugative antiaromaticity has been evidenced by the upfield shifts of1H NMR signals and theoretical calculations, including large NICSzzvalues and ACID plots.