26038-05-1

Upstream product

• 4233-33-4 4-Phenyl-1,2,4-triazolidine-3,5-dione 
• 539-80-0 Tropone 
• 16273-47-5 ditropylether 

Downstream Products

• 121080-72-6 C₁₇H₁₉N₃O₂ 
• 121080-71-5 8-Methylene-4-phenyl-2,4,6-triaza-tricyclo[5.3.2.0^2,6]dodecane-3,5-dione 
• 32418-40-9 2-phenyl-dihydro-5,9-ethano-[1,2,4]triazolo[1,2]diazepine-1,3,6-trione 

Relevant academic research and scientific papers

Unambiguous detection of 2,4,6-cycloheptatrien-1-ol by NMR spectroscopy and trapping with phenyltriazolinedione

For the first time, the title alcohol 3 was unambiguously detected as a transient intermediate leading to ditropylether (6) in a cation-anion reaction between the tropylium ion (5) and hydroxide ion in an aqueous solution by NMR spectroscopy. It was also found that 6 gives 3 as a transient product in acid-catalyzed disproportionation of 6 into a mixture of tropone (4) and 1,3,5-cycloheptatriene (7) in chloroform containing water. Furthermore the existence of 3 in the latter reaction was confirmed by trapping with 4-phenyl-1,2,4-triazoline-3,5-dione to afford the [4+2]cycloadduct of the norcaradiene form of 3.

UV-LASER PHOTOCHEMISTRY: GENERATION OF THE TRIPLET SPIRONONA-4,7-DIYL DIRADICAL BY NITROGEN EXTRUSION FROM THE AZOALKANE 6,7-DIAZASPIRO. CONFORMATIONAL INFLUENCE ON THE LIFETIME OF A 1,4-CYCLOHEPTADIYL AS DE

Using the cyclopropylcarbinyl rearrangement, the lifetime of the triplet diradical spironona-4,7-diyl was estimated as 0.3 3τ 3.3 ns; the short triplet lifetime of this localized 1,4-diradical is rationalized in terms of fast ISC out o