Cyclohexane homologues

Yang and co-workers [9,10] used high resolution Py-GC-MS and Fourier transform infrared spectrometry to study the structures of the chlorinated natural rubbers (CNR) prepared by two different processes. The results indicate that the fine structures of CNR prepared from latex and solution processes are different, whereas their basic structures are similar. The molecule of CNR from the latex process contains a few carboxyl and carbonyl groups. The rings on CNR molecular chains should be hexatomic rings. The optimum pyrolytic temperature for CNR is 445 °C, with an available range from 386-590 C. The characteristic pyrolytic products are cyclohexane homologues. 

The optimum pyrolytic temperature for chlorinated natural rubbers is 455 C, with an acceptable range of 386 to 590 °C the characteristic pyrolytic products are cyclohexane homologues. 

According to the coordinatoclathrate predict, the Spiro compound 23 will not allow the formation of inclusion compounds with dimethylformamide and other polar solvents, but with benzene, tetrahydrofuran, and 1-bromopentane (Table 3). Due to the limited number of guest inclusions, a lattice cavity of rather restricted dimensions is suggested for 23 e.g. toluene, cyclohexane or dioxane are not suitable guest partners for 23, whereas lower homologues (cf. benzene, tetrahydrofuran) are readily included 37). The behavior of a reduced analogue of 23, the hydroxymethyl — substituted spiro compound 24, is in some way comparable since an inclusion compound with benzene is the only one known interestingly it is formed exclusively with optically resolved but not with racemic 24 49). 

The irones are ionone homologues that have an additional methyl group adjacent to the twin methyl groups in the cyclohexane ring. The number of possible irone isomers is larger than that of the ionones due to the additional methyl group on the ring. Some of these irone isomers occur in essential oils from the roots of Orris species (see Orris Root Oil). 

Very recently, the study of linear birefringences has been extended to BE [32], where, as for ref. [31], furan and its homologues were investigated, in this case in solutions of cyclohexane. The latter were the subject of an experimental analysis by Dennis et al. [33], In ref. [32] advantage is taken of the recent development of frequency-dependent quadratic response in the nonequilibrium PCM solvation regime [34],... 

The substances used as the molecular probes in the gas chromatographic experiment consisted of molecules with no groups or bonds capable of specific interactions with the adsorbent surface [9] saturated hydrocarbons with linear and branched structures, and cyclohexane and its methyl- and dimethyl-substituted homologues. Benzene and its derivatives were also used. 

While the focus of our research is to utimately activate methane to methanol, as is readily done by methane monooxygenase, we also want to understand what types of biomimics will activate higher homologues as well (C2, C3, and cycloC ). In addition, the bond dissociation energies may play an important role in our ability to activate methane at ambient temperature, since methane has the highest C-H bond dissociation energy (kcal) of all alkanes, i.e., methane(104) ethane(98) propane(96) and cyclohexane (94). 

Hexamethylene, C6H12, cyclohexane, or hexahydrobenzene, is found in Caucasian petroleum, which consists essentially of this hydrocarbon and its homologues, which are called napthenes. Hexamethylene is prepared by the method of Seba-tier and Senderens, which consists in reducing a compound by passing a mixture of its vapor and hydrogen over finely divided nickel which is heated between 150° and 200° —... 

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