Cyclohexane cyclopentane

The Prins cyclization can also be coupled with a ring-contraction pinacol rearrangement, as illustrated in Scheme 1.6. This allows a smooth conversion of alkyl-idene-cyclohexane acetal 1-16 to single bond-joined cyclohexane cyclopentane aldehyde 1-17 [le]. 

Non-polar solvent Hexane Heptane Isooctane Cyclohexane Cyclopentane Carbon disulfide Carbon tetrachloride Benzene... 

Methylcyclohexanol, see Methylcyclohexane Methylcyclopentane, see Benzene, Cyclohexane, Cyclopentane, Hexane Methyl diazene, see 1,1-Dimethylhydrazine Methyldibenzofuran, see Pyrene Methyl 5-(2,4-dichlorophenoxy)anthranilate, see Bifenox... 

A mixed reagent formed from Ge[CH(SiMc3)2]2 or Ge[N(SiMe3)2]2 and PhX (X = Cl, Br, I) was shown to reaction directly with alkanes (cyclohexane, cyclopentane, butane, methylcyclopentane), aromatics (toluene, ethyl... 

In the presence of light or a peroxide initiator it reacts with cyclohexane, cyclopentane, or toluene to give cyclohexyl bromide, cyclopentyl bromide, or benzyl bromide, respectively. 

TJecent studies using a cross-beam technique have shown that free radicals produced in the vapor phase by irradiation with 100 e.v. electrons (18, 22, 23), 40 Kev. Ar+ ions (39), or 1 Mev. He+ ions (34), can be trapped at 77°K. and studied by ESR. Experiments on water vapor irradiated by 100 e.v. electrons (22), or by 1 Mev. He+ ions (34), showed the formation of trapped electrons, e t—a species thought to be the H02 radical—and provided indirect evidence for hydrogen atoms (34). Cyclohexane, cyclopentane, and benzene gave the same results from 1 Mev. He+ irradiation (40) as from 40 Kev. Ar+ irradiation (39)... 

Mesitylene Hexamethylbenzene / Cyclopropane Cyclohexane Cyclopentane. Pentaerythrityl tetracetate... 

From the Caribbean sponge Cacospongia linteiformis was isolated lintenone (156) with a new tricarbocyclic skeleton, which contains fused cyclohexane, cyclopentane and cyclobutane rings. Lintenone exhibited high antifeedant activity against the fish C. aurantus (30 pg per cm2 of food pellets), ichthyotoxicity to G. affinis (10 ppm) and moderate toxicity in A. salina assay (LC50 109 ppm) [166]. 

Acetic anhydride Acrolein Aluminum chloride anhydrous 2-Aminopentane p-Anisic acid p-Anisic acid Bis (chloromethyl) ether Cetethyidimonium bromide Cetrimonium bromide Cetylpyridinium bromide Cobalt chloride (ous) Cyclohexane Cyclopentane Diacetone alcohol Dimethyl sulfate... 

Complex 1 was found to activate a wide variety of hydrocarbons, including propane, pentane, cyclohexane, cyclopentane, methane, mesitylene, isobutene, and r-butylethylene [8, 9]. For linear hydrocarbons, a kinetic preference was observed for the exclusive activation of the C-H bonds of the terminal methyl groups. The activation of secondary C-H bonds was only observed when no other primary C-H bonds were available (e.g., cyclohexane, cyclopentane, cyclopropane [10]). With mesitylene, both aromatic and benzylic C-H bonds were cleaved. These observations were interpreted in terms of initial coordination of the hydrocarbon C-H bond to the 16-electron rhodium fragment, followed by rapid migration along the chain to... 

Ewing, M. B. Marsh, K. N. Excess functions for cyclopentane + cyclohexane, cyclopentane -t cycloheptane, and cyclohexane +... 

This chapter follows much the same pattern as has been established in previous volumes. Material of theoretical and specific structural significance on five- and six-membered rings and related simple fused-ring systems is included to the exclusion of a wide range of such information found inter alia under general synthesis and identification. Also included is a selection of the more important aspects of reactivity associated with simply functionalized cyclohexanes, cyclopentanes, and their fused-ring systems. 

The same methodology applies to heteroarylpentenes which lead to heterocyclic compounds fused with a cyclohexane (cyclopentane fused-heterocycles are not available since the five-membered ring closure onto the aromatic is too slow to compete with the oxidative elimination) (equation (64)) [128]. Even though the reactions are usually performed under thermal conditions in aqueous acetic acid at 90 °C, it has been shown to proceed faster under sonication, although in slightly lower yields. 

The hydrocarbons acetone, benzene, butene, cw-butene, cyclohexane, cyclopentane, cyclopropane, ethylene, isobutene, isooctane, methylcyclohexane, propylcyclohexane, neopentane, propyne, franj-hutene, and toluene. 

This test method will detect the following impurities toluene, methylcyclopentane, n-hexane, 2-methylhexane, cyclohexane, cyclopentane, 2-methylpentane, 2,3-dimethyl-pentane, 3-methylhexane, -heptane, methylcyclohexane, ethylcyclopentane, 2,4-dimethylhexane, trimethylpentane, and others where specific impurity standards are available. Absolute purity cannot be accurately determined if unknown impurities are present. 

The parameter sets were modified slightly, as described in detail in the paper. This was done partly to conform to our new forms of potential energy functions, see sections 9 1, 9 2 and 11.6.2, partly to take into account the special problems encountered with torsional angles in spiro compounds containing small rings. The parameter sets were checked on cyclohexane, cyclopentane, cyclobutane and cyclopropane with good results except for the vibrational spectrxim of cyclopropane and the structure of cyclobutane which came out planar as in some of its derivatives. 

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