102780-14-3

Upstream product

• 122-00-9 para-methylacetophenone 
• 3111-61-3 2-[1-(4-methylphenyl)ethylidene]malononitrile 
• 1514925-13-3 2-[2-(cyclohepta-2,4,6-trienyl)-1-(4-tolyl)ethylidene]malononitrile 
• 102780-20-1 3-Methoxy-2-p-tolyl-3,8a-dihydro-2H-azulene-1,1-dicarbonitrile 

Downstream Products

• 1448895-48-4 7-(4-cyanophenyl)-2-(4-tolyl)-1,8a-dihydroazulene-1,1-dicarbonitrile 
• 1448895-42-8 7-(4-methoxyphenyl)-2-(4-tolyl)-1,8a-dihydroazulene-1,1-dicarbonitrile 
• 1448895-28-0 7-bromo-2-(4-tolyl)-1,8a-dihydroazulene-1,1-dicarbonitrile 
• 102780-25-6 <2-(2,4,6-Cycloheptatrien-1-yliden)-1-(4-methylphenyl)ethyliden>propandinitril 

Relevant academic research and scientific papers

Syntheses of donor-acceptor-functionalized dihydroazulenes

The dihydroazulene (DHA)/vinylheptafulvene (VHF) photo/thermoswitch has been of interest for use in molecular electronics and advanced materials. The switching between the two isomers has previously been found to depend strongly on the presence of donor a

Light-Induced and Reversible Transformations: Syntheses and Properties of Photochromic 1,1-Dicyano-1,8a-dihydroazulenes and Thermochromic 8-(2,2-Dicyanovinyl)heptafulvenes

1,1-Dicyano-2-aryl-1,8a-dihydroazulenes 6(a-g) are prepared in a two-step synthesis starting from 8-methoxyheptafulvene and benzylidenemalononitriles via the tetrahydroazulenes 5.The compounds 6(a-h) rearrange to 8-(2,2-dicyano-1-arylvinyl)heptafulvenes 7(a-h) by irradiation with visible light.The back reaction of 7 to 6 occurs under thermal conditions.Donor-substituted compounds indicate higher long term stability of the equilibrium 6 7 (6f 7f > 44 h).Spectroscopic data of 6 and 7 are given.The molecular structures of the p-bromophenyl derivative 6c and of the p-methoxyphenyl derivative 7f are revealed through crystallography.Some results for the rearrangements 6 7 in the solid state are given.