90522-51-3

Upstream product

• 27081-10-3 tropylium tetrafluoroborate 
• 100-06-1 1-(4-methoxyphenyl)ethanone 

Downstream Products

• 116263-61-7 C₁₉H₁₇N₂O⁽¹⁺⁾*BF₄^(1-) 
• 102780-15-4 2-(4-methoxyphenyl)-1,8a-dihydroazulene-1,1-dicarbonitrile 
• 116263-46-8 <2-(2,4,6-Cycloheptatrien-1-yl)-1-(4-methoxyphenyl)ethyliden>-propandinitril 

Relevant academic research and scientific papers

Oxyanion-assisted Retro-Diels-Alder Reactions in the Tricyclo2,8>nona-3,6-diene (Barbaralane) System

9-Vinyl- and 9-aryl-tricyclo2,8>nona-3,6-dien-9-olates (1c - h) underwent the retro-Diels-Alder reaction to give cycloheptatrienes (2c - h) in excellent yields, indicating that it is not necessary for the fragmented 4? component to be incorporated into an aromatic nucleus.

Light-Sensitive Dihydroazulenes: Alternative Synthesis - The Influence of Alkyl Substituents at the Five-Memeered Ring on the Photochromic Behaviour

Starting from cycloheptatrienylium tetrafluoroborate (8) the dihydroazulenes 1 were synthesized via substituted cycloheptatrienes 10 - 13 as intermediates.The dicyanovinyl derivatives 12 and 13 were transformed into vinylheptafulvenes 2 by dehydrogenation