143101-92-2

Basic information

• Product Name: Bicyclo[9.2.2]pentadeca-10,12,14-trien-2-one, 10-phenyl-
• CAS NO: 143101-92-2
• Molecular Formula: C21H24O
• Molecular Weight: 292.421
• Mol File: 143101-92-2.mol

Chemical Properties

• CAS DataBase Reference: Bicyclo[9.2.2]pentadeca-10,12,14-trien-2-one, 10-phenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Bicyclo[9.2.2]pentadeca-10,12,14-trien-2-one, 10-phenyl-(143101-92-2)
• EPA Substance Registry System: Bicyclo[9.2.2]pentadeca-10,12,14-trien-2-one, 10-phenyl-(143101-92-2)

Safety Data

• Hazardous Substances Data: 143101-92-2(Hazardous Substances Data)

Upstream product

• 143101-90-0 2,2-diphenylcyclononanone 
• 143245-68-5 C₂₁H₂₄O 
• 220863-22-9 (diphenylmethylene)cyclooctane 
• 220863-23-0 2,2-diphenyl-1-oxa-spiro[2.7]decane 

Downstream Products

• 1530-21-8 1,1-diphenyl-1-octene 
• 94578-31-1 1,1-diphenylcyclooctane 

Relevant articles and documents

Behavior of biradicals generated from a Norrish type-I reaction of 2,2- diphenylcycloalkanones. Chain-length dependence and magnetic field effects

The reaction course of acyl-diphenylmethyl biradicals (α-oxo-ω, ω- diphenyl-α,ω-alkanediyl biradicals), O=C↑(CH2)η-2-C↑Ph2 (3BR-η), generated from the Norrish type-I reaction of 2,2-diphenylcycloalkanones (CK- η) with various ring sizes in methanol, is switched from intramolecular disproportionation (n = 6, 7), giving a diphenylalkenal, to acylphenyl recombination (n ≥ 9), affording a cyclophane derivative. The behavior of 3BR-9 derived from CK-9 was studied in detail; the photolysis of CK-9 afforded an open-chain and a cyclic decarbonylation product together with an unsaturated aldehyde and a 4-methylene-2,5-cyclohexadienyl ketone (a pre- cyclophane). The photolysis of this ketone gave the same products that arose from the photolysis of CK-9, presenting the possibility that the decarbonylation products and a part of the aldehyde are formed as secondary products during irradiation. The magnetic field dependence of the lifetimes of 3BR-η (η = 12 and 13) generated from CK-12 and 13, respectively, was measured in methanol by means of a pulsed-laser excitation technique. The rate constants for intersystem crossing showed a maximum at a relatively low field strength, which decreased with increasing the field strength to level off to an asymptotic value at > 1.5 kG. The results show that the role of hyperfine coupling in intersystem crossing is less important in these systems, presumably because of the presence of a carbonyl oxygen and the absence of a hydrogen atom at the radical center.

Effects of chain length on behavior of biradicals generated from Norrish type I reaction of 2,2-diphenylcycloalkanones. Isolation and photochemistry of intermediate methylenecyclohexadienyl ketones

The reaction course of biradicals, O=C(↑)-(CH2)(n-2)-C(↑)Ph2, generated from Norrish type I reaction of 2,2-diphenylcycloalkanones with various ring sizes, is switched from intramolecular disproportionation (n = 6,7) to acyl-phenyl r