4603-00-3

Upstream product

• 536-74-3 phenylacetylene 
• 629-20-9 1,3,5,7-cyclooctatetraene 
• 71-43-2 benzene 
• 109-99-9 tetrahydrofuran 
• 74-86-2 acetylene 
• 60-29-7 diethyl ether 
• 591-51-5 phenyllithium 
• 76036-77-6 Th(C₈H₇C₆H₅)2 
• 477773-51-6 cyclooctatetraene 

Downstream Products

• 99553-67-0 1α,4α,6α,9α,2-phenyl-5,10-dioxatricyclo<7.1.0.0^4.6>deca-2.7-diene 
• 67687-96-1 Ru(Si(CH₃)3)(CO)2(C₈H₇C₆H₅(Si(CH₃)3)) 
• 82405-03-6 [Cr(CO)3(C₆H₅C₈H₇)] 
• 94578-32-2 1,5-diphenyl-cyclooctane 
• 90968-58-4 9-phenyl-7,8-dioxabicyclo<4.2.2>deca-2,4,9-triene 
• 16538-85-5 phenylcyclooctane 

Relevant academic research and scientific papers

Uebergangsmetallkomplexe. V. UEBER EINE EINFACHE SYNTHESE DES PHENYL-CYCLOOCTATETRAENS UND DESSEN LIGANDEN-EIGENSCHAFTEN GEGENUEBER NULLWERTIGEM NICKEL

Butyl- and phenylcyclooctatetraene can be prepared in good yield by reaction of 2 equivalents of an organolithium complex with cyclooctatetraene followed by oxidation.In the case of phenylcyclooctatetrane, the intermediate dilithium salt could be isolated.The crystal structures of the 2:1 and 1:1 complexes formed by phenylcyclooctatetraene with zerovalent nickel have been determined by X-ray methods.

Characterization of the combustion products of polyethylene

Polyethylene (PE) was burned in a tube-type furnace with an air flow at a temperature of 600~900°C. Combustion products were collected with glass wool, glass fiber filter, and XAD-2 adsorbent. The analysis of the products was performed with GC-FID and GC-MSD. At low temperature, hydrocarbons were the major components, while at higher temperature the products were composed of polycyclic aromatic hydrocarbons. With the high performance of the Hewlett-Packard 6890GC-5973MSD, more compounds were identified in comparison with previous studies.

A new synthesis of semibullvalenes via photodecarbonylation of norsnoutanones

A new and simple approach to C1(5) monosubstituted semibullvalenes from 4-substituted pentacyclo[4.3.0.02,4.03,8.05,7]nonan-9-ones (norsnoutanones) via photo-mediated cheletropic ejection of CO is reported.

Heats of Generation of Substituted Annulene Dianions

Calorimetric studies have shown that either a phenyl or tert-butoxy substituent on annulene () increases the heat of generation (ΔHgen0) of the respective dianion 0 for R-(HMPA) + 2Na(s) --> R-2- + 2Na+(HMPA)> in hexamethylphosphoramide relative to that of .The values for ΔHgen0 are -51, -38, and -42 kcal/mol respectively for R=H, C4H9, and C6H5.The destabilization of the dianion relative to the neutral molecule due to the presence of a phenyl group is accounted for by the fact that the phenyl group is nearly orthogonal to the charged eight-member ring system.This is supported by the NMR spectrum of Ph-2-. 1H NMR studies carried out upon the solvent (HMPA) in the presence of *- show that the Knight shift is very close to that predicted from changes in bulk paramagnetic susceptibility.This confirms the facts that *-(HMPA) is free of ion association and that ion association must be present to provide a mechanism of spin transfer from the anion radical to the solvent.The previously reported dissociation enthalpy of 2-,K+ in HMPA has been combined with several calorimetrically determined values and an extra thermodynamic parameter to obtain a value of -195 kcal/mol for a single ion heat of solvatation of the dianion of annulene in HMPA.

Synthesis and properties of substituted thorocenes

Disubstituted bis(cyclooctatetraene)thorium(I) (thorocene) complexes have been prepared. Unlike thorocene itself, these derivatives are soluble in organic solvents. Proton and 13C NMR spectra of these air-sensitive diamagnetic compounds show a significant decrease in electron density in the rings relative to dipotassium cyclooctatetraene salts. The chemistry of thorocenes and uranocenes is compared. Like uranocenes, thorocenes do not undergo facile ligand-exchange reactions with cyclooctatetraenes; both, however, do give rapid exchange with cyclooctatetraene dianions.