Dispiro tetradecane-7,14-dione

B. Cyclohexylidenecyclohexane. In a Hanovia 450-watt immersion photochemical reactor (Note 2), equipped with a side arm attachment to monitor gas evolution, is placed 15 g. (0.068 mole) of dispiro[5.1.5.1]tetradecane-7,14-dione dissolved in 150 ml. of methylene chloride. The sample is irradiated, and carbon monoxide starts to evolve rapidly after a few minutes. Irradiation is continued until gas evolution has ceased, usually... [Pg.34]

The preparation of the dispiro[5.1.5.1]tetradecane-7,14-dione intermediate is essentially that of Walborsky and Buchman. ... [Pg.36]

Dipolar cycloadditkm reactions of nitrones to olefins, 46, 1,3-Dipolar cycloadditions with 3-phenylsydnone, 45, 98 Dispiro[5 1 5 l]tetradecane-7,14-dione, photolysis to cyclohexylidene-cyclohexane, 47, 34 preparation from cyclohexanecarbonyl chlonde and triethylamine, 47,34 Displacement of bromine from 1-bromo-2-fluoroheptane to give 2-fluoro-heptyl acetate, 46, 37... [Pg.128]

Photolysis, apparatus for, 47, 65 of butadiene to cis- and Irans-1,2-divinylcyclobutane, 47, 65 of dispiro[5.1.5.l]tetradecane-7,14-dione to cyclohexylidenecyclo-hexane, 47, 34... [Pg.80]

Dehydrohalogenation, of cyclohexane-carbonyl chloride to dispiro-[5.1.5. l]tetradecane-7,14-dione, 47,34... [Pg.69]

A. Dispiro[5.1.5.1]tetradecane-7,14-dione. Cyclohexanecarbon-yl chloride (Note 1) (30.0 g., 0.205 mole) and 250 ml. of dry benzene are placed in a three-necked, round-bottomed flask equipped with a stirrer, condenser, and dropping funnel. A nitrogen atmosphere is maintained in the system. Dry triethylamine (35.0 g., 0.35 mole) is slowly added, and the mixture is heated under reflux overnight. The amine hydrochloride is then filtered, and the filtrate is washed with dilute hydrochloric acid and with water. Solvent is removed on a steam bath, and the residue is recrystallized from ligroin-ethanol yield 11-13 g. (49-58%), m.p. 161-162°. [Pg.18]

Dipotassium platinum tetrachloride, 182 Dipotassium rhodizonate, 262 N,N -Disalicyle(hylenediamine, 360 Disodium acetylide, 182 Disodium phenanthrene, 182 Dispiro[2.0.2.2]octene-7, 388 Dispiro[5.1.5. l]tetradecane-7,14-dione, 428, 429... [Pg.265]

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