Cyclo-dodecane

DOTAM = l,4,7,10-tetraaza-l,4,7,10-tetrakis-(carbamoylmethyl)cyclo-dodecane =... 

Although pure biphenyl does not fluoresce, an intense blue phosphorescence is emitted from a crystal of it as 6°K after the addition of dibenzothiophene. This phosphorescence originates from energytrapping centers created in the crystalline lattice adjacent to a dibenzothiophene molecule. The phosphorescence lifetime of a crystal of cyclo-dodecane similarly treated has also been measured. ... 

Hexamethylene-bridged cycloheptatrienes have been prepared. Thus cyclo-dodecane-l,5-dione was cyclized by base to bicyclo[6,4,0]dodec-l(8)-en-9-one, which was reduced to the alcohol and converted into 13-bromobicyclo[6,4,l]trideca-... 

Cyclo- dode- cene Ethanol PdClg/HCl Ethyl cyclo-dodecane-carboxylate 93 [509]... 

Chemical N2une Hexabromo-cyclo-dodecane Form White powder % Br 75... 

Since the technology is still developing, the industry has not yet focused its choice on one or two leading organo-bromine compounds. Rather, many manufacturers and many users of these flame retardants report serious interest in a wide variety of structures. Those most frequently mentioned in the technical literature, in approximate order of importance, are [2, 19, 21, 22, 25, 26], as follows decabromo diphenyl oxide, ethylene bis(tetrabromo phthalimide), tetradecabromo diphe-noxy benzene, ethylene bis(dibromo norbornane dicar-boximide), octabromo diphenyl oxide, hexabromo cyclo dodecane, tetrabromo dipentaerythiitol. In Europe, the organo-bromine compounds mentioned are quite different, mostly based on ethers of tetrabromo bisphenol A and while Europeans are more concerned about possible toxicity, paradoxically they are more likely to use polybrominated biphenyls, which would be taboo in the US [2, 28]. 

Photolytic. Photolysis of thin films of solid endrin using UV light X = 254 nm) produced 5-ketoendrin and endrin aldehyde and other compounds (Rosen et al., 1966). When exposed to sunlight for 17 d, endrin completely isomerized to 5-ketoendrin (1,8 eYO-9,10,11,11-hexachloro-yclo[6.2.1.1 .0 0 °]dodecan-5-one) and minor amounts of endrin aldehyde (Burton and Pollard, 1974). Irradiation of endrin by UV light X = 253.7 and 300 nm) or by natural sunlight in cyclohexane and hexane solution resulted in an 80% yield of l,8-eA o-9,ll,ll-pentachloro-cyclo[6.2.1.1 0 0 °]dodecan-5-one (Zabik et al, 1971). This compound also formed from the sunlight photolysis of endrin in hexane solution (Fujita et al., 1969). 

Oxime konnen auch mit Natriumdichromat zu Nitro-Verbindungen oxidiert werden. So erhalt man z.B. aus enrfo,enrfo-2,6-Bis-[hydroximino]-[4]peristylan das 2,6-Dinitro-hexa-cyclo[5.4.1.02,6.03,l°.0s,9.0s,tt]dodecan in vergleichsweise (s.S. 178) geringerer Ausbeute (50%)2 ... 

Cyclo-pentyl-4 (3-cyclo- i pentyl-propyl) 1 dodecane 3 ]2C C8 C25H48 96.0 137.5... 

The Diels-Alder dimerization of 2,6,6-trimethyl-2,4-cyclo-hexadienone to l,4,6,6,9,9-hexamethyl-A3U-tricyclo-[6.2.2.0 2 7]-dodecane-5,10-dione2 facilitates its separation from the major alkylation product, 2,6-dimethylanisole. 

Spiro 6.6 tridec-2-en 6-Oxo- E17c, 2595 (2-Acyl — 1-etheny] — cyclo-propan/Li —NR2 + R3Si —Cl) Tricyclo[4.4.2.0l6]dodecan 11 (or 12)-Methylen-2-oxo- E21c, 3104 (bicycl. En — on + Allen) Tricyclo 6.4.01 s]dodecan 8-Methyl-... 

Phosphane-free palladium(O) catalysts convert 3,3-dialkylcyclopropenes to tram-. x -cyclo[3.1.0.0 ]hexane derivatives 16 as the major product together with pentacy-clo[9.1.0.0 . 0 . 0 ]dodecane derivatives (12-16%). In the presence of phosphanes, the tetracyclo[6.1.0.0 . 0 ]nonane systems 17 was formed in > 80% yield. ... 

Ti-ITQ-7 ISV TEOT TEOS l,3,3-trimethyl-6-a2onium tri-cyclo[3.2.1.4 ] dodecane The crystalline silica polymorph of lowest density 150 °C, 12 days Diaz-Cabanas, 2000 (40)... 

Another saturated, polycyclic hydrocarbon for which a heat of formation is available is hexa-cyclo[7,2, l,0 ,0 ,0 ]dodecane, the cage molecule shown in Fig. 15. From combustion data< the value has been obtained A (c) = + 12 06 0 27 kcal/mole, and taking a somewhat arbitrary heat of sublimation of 12 kcal/... 

There is a nomenclature dilemma for cyclic alkanes. The suffix for the name must be ane because they are alkanes. The normal prefix will indicate the presence of 3-12 carbons for the alkanes in Figure 4.4, so the names should be propane to dodecane. Those names have already been taken for the acyclic alkanes To distinguish between the linear 12-carbon molecule (dodecane) and the 12-membered cyclic (ring) alkane, use the term cyclo. If the ring is viewed as a cycle, then the prefix cyclo is used in front of the alkane name (a prefix in front of the carbon number prefix). The three-membered ring alkane therefore becomes cyclopropane and the 12-membered ring alkane becomes cyclododecane (see Figure 4.4). 

The following aUphatic compounds have been detected in small amounts in Evemia prunastri (L.) Ach. nonane, decane, undecane, dodecane, tridecane, tetradecane, pentadecane, 2-me-thylpentadecane, hexadecane, hepatdecane, pentadec-l-ene, (Z)-heptadeca-l,8-diene, (Z), (Z)-heptadeca-1,8,11 -triene, dec-1 -yne, cyclo-... 

Ohkura K., Nishijima K., and Seki, K., Electrocyclic rearrangement of pentamethyl-cyclooctapy-rimidine-2,4-diones reaction pathway into a 9,11-diazapenta-cyclo [6.4.0.0. 0. 0 ]dodecane sys-... 

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