29647-95-8

Basic information

• Product Name: 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one
• Synonyms: 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one
• CAS NO: 29647-95-8
• Molecular Weight: 210.276
• Mol File: 29647-95-8.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one(29647-95-8)
• EPA Substance Registry System: 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one(29647-95-8)

Safety Data

• Hazardous Substances Data: 29647-95-8(Hazardous Substances Data)

Upstream product

• 705966-74-1 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one (E)-O-pentafluorobenzoyloxime 
• 27081-10-3 tropylium tetrafluoroborate 
• 98-86-2 acetophenone 
• 27081-10-3 cycloheptatrienylium tetrafluoroborate 
• 74597-18-5 7-norbornadienylacetic acid 
• 591-51-5 phenyllithium 

Downstream Products

• 34824-46-9 1-(2-Hydroxyethyloxy)-2-phenyltetrahydro-azulen 
• 82126-25-8 C₁₅H₁₄N₂ 
• 116263-45-7 <2-(2,4,6-Cycloheptatrien-1-yl)-1-phenylethyliden>propandinitril 
• 705966-60-5 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one (E)-oxime 
• 705966-74-1 2-(cyclohepta-2,4,6-trienyl)-1-phenylethan-1-one (E)-O-pentafluorobenzoyloxime 
• 39183-99-8 2-phenyl-1-azaazulene 
• 33654-54-5 1-Cyano-2-phenylazulen 
• 102780-24-5 <2-(2,4,6-Cycloheptatrien-1-yliden)-1-phenylethyliden>propandinitril 
• 102780-13-2 2-phenyl-1,8a-dihydroazulene-1,1-dicarbonitrile 
• 34824-48-1 1-(2-Hydroxyethyloxy)-2-phenylazulen 
• 19227-07-7 2-phenylazulene 

Relevant articles and documents

Towards solar energy storage in the photochromic dihydroazulene-vinylheptafulvene system

Abstract One key challenge in the field of exploitation of solar energy is to store the energy and make it available on demand. One possibility is to use photochromic molecules that undergo light-induced isomerization to metastable isomers. Here we present efforts to develop solar thermal energy storage systems based on the dihydroazulene (DHA)/vinylheptafulvene (VHF) photo/thermoswitch. New DHA derivatives with one electron-withdrawing cyano group at position 1 and one or two phenyl substituents in the five-membered ring were prepared by using different synthetic routes. In particular, a diastereoselective reductive removal of one cyano group from DHAs incorporating two cyano groups at position 1 turned out to be most effective. Quantum chemical calculations reveal that the structural modifications provide two benefits relative to DHAs with two cyano groups at position 1: 1) The DHA-VHF energy difference is increased (i.e., higher energy capacity of metastable VHF isomer); 2) the Gibbs free energy of activation is increased for the energy-releasing VHF to DHA back-reaction. In fact, experimentally, these new derivatives were so reluctant to undergo the back-reaction at room temperature that they practically behaved as DHA to VHF one-way switches. Although lifetimes of years are at first attractive, which offers the ultimate control of energy release, for a real device it must of course be possible to trigger the back-reaction, which calls for further iterations in the future. Molecular solar thermal energy storage: Derivatives of the dihydroazulene (DHA)/vinylheptafulvene (VHF) photo/thermoswitch with only one cyano group at position 1 were prepared and investigated experimentally and theoretically. Compared to derivatives with two cyano groups, these compounds exhibit larger energy differences between DHA and VHF isomers and hence larger energy storage capacities, while the VHF to DHA back-reaction is on hold (see scheme).

Palladium-catalyzed synthesis of 1-azaazulenes from cycloheptatrienylmethyl ketone O-pentafluorobenzoyl oximes

Substituted 1-azaazulenes are synthesized from cycloheptatrienylmethyl ketone O-pentafluorobenzoyloximes by the intra-molecular Heck-type amination catalyzed by Pd(dba)2-(t-Bu)3P.

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.