56305-41-0

Basic information

• Product Name: 1-phenyl-hept-4-en-1-one
• Synonyms: 1-phenyl-hept-4-en-1-one
• CAS NO: 56305-41-0
• Molecular Weight: 188.269
• Mol File: 56305-41-0.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: 1-phenyl-hept-4-en-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 1-phenyl-hept-4-en-1-one(56305-41-0)
• EPA Substance Registry System: 1-phenyl-hept-4-en-1-one(56305-41-0)

Safety Data

• Hazardous Substances Data: 56305-41-0(Hazardous Substances Data)

Upstream product

• 15482-43-6 1-benzoyl-2-vinylcyclopropane 
• 917-54-4 methyllithium 
• 6919-61-5 N-methoxy-N-methylbenzamide 
• 71919-90-9 γ-cyclopropylbutyrophenone 
• 20599-27-3 1-bromopent-2-ene 
• 98-86-2 acetophenone 

Relevant articles and documents

Oxovanadium-catalysed domino reactions of hydroxy enynes for the construction of Cashmeran-like odorants

An atom-economical oxovanadate-catalysed cycloisomerization of hydroxy enynes for the synthesis of bicyclo[4.3.0]non-1(9)-en-2-ones is disclosed, which can be rationalised through a cascade reaction of a dissociative Meyer-Schuster rearrangement to allenyl vanadates, followed by a thermal intramolecular Diels-Alder (IMDA) reaction and hydrolytic regeneration of the catalyst. This journal is

Monoradical Rearrangements of the 1,4-Biradicals Involved in Norrish Type II Photoreactions

The photochemistry of α-allylbutyrophenone (α-AB) and that of γ-cyclopropylbutyrophenone (γ-CB) both reveal that the 1,4-biradicals generated by triplet-state γ-hydrogen abstraction undergo typical radical rearrangements in competition with their more normal type II reactions.From α-AB, 2-phenyl-2-norbornanol is formed in 1/24th the combined yield of 1-phenyl-4-penten-1-one and 1-phenyl-2-allylcyclobutanol.Its formation is explained by a 5-hexenyl-to-cyclopentylmethyl rearrangement of the 1,4-biradical, with a rate constant of 5 x 105 s-1.From γ-CB, 1-phenyl-4-hepten-1-one and 1-phenyl-4-cycloheptenol together are formed in double the yield of acetophenone.Their formation is explained by a cyclopropylcarbinyl-to-allylcarbinyl rearrangement of the 1,4-biradical, with a rate constant of 2 x 107 s-1.In both cases, the rearrangement percentages are what would be predicted if the biradicals have the same 35 - 50-ns lifetime measured for other ketones and if they rearrange with the same rate constants characteristic of monoradicals.Triplet γ-CB decays only 1.5 times faster than triplet γ-isopropylbutyrophenone, indicating that there is at most a small enhancement of the γ-hydrogen abstraction rate by cyclopropyl cojugation.Triplet α-AB decays 100 times faster than triplet butyrophenone, 99percent representing internal quenching by the β-vinyl group ( k = 8 x 108 s-1).Bicyclic oxetanes are formed in quantum yields of only 0.01.No oxetanes were isolated, only rearranged unsaturated alcohols and aldehydes.