236 research outputs found

    3.11と知識の伝承

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    技術者の倫理として、人工物を媒介とした倫理を取り上げる。この枠組みの下で他の伝統的専門家と技術者を対比し、ものづくりをする人のリスクコミュニケーションを考える。そして、技術導入の一種である完成晶納入契約(ターンキー契約)のあり方や、9.11をきっかけとしたアメリカの対策義務(B.5.b)の日本での受け入れについて取り上げる。特集/福島原発事故で工学倫理を考え

    Reduction of 2, 3-epoxypinane and 3, 4-epoxyc arane

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    1. In presence of Raney nickel, 2,3-epoxypinane is reduced with formation of two alcohols of composition C10H18O. 2. Hydrogenation is accompanied by the isomerization of 2,3-epoxypinane to a ketone of composition C10H16O, which is identical with the product of the thermal isomerization of the epoxide and with the product of die oxidation of the alcohol C10H18O obtained by the reduction of 2,3-epoxypinane over Raney nickel. 3. The ketone C10H16O, product of the thermal isomerization of 2,3-epoxypinane, is reduced by lithium aluminum hydride to a mixture of two stereoisomeric alcohols of composition C10H18O, which are not identical with the alcohols obtained by the reduction of 2,3-epoxypinane over Raney nickel. 4. When pinocamphone from oil of hyssop is reduced with lithium aluminum hydride, an alcohol C10H18O, which differs from those mentioned above, is formed. 5. In presence of Raney nickel, 3,4-epoxycarane is reduced to an alcohol of composition C10H18O, and under the action of heat it is isomerized to a ketone of composition C10H16O. © 1960 Consultants Bureau Enterprises, Inc

    Isomerization of terpene hydrocarbons by the action of silica gel under the conditions of adsorptional analysis

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    1. α-Pinene, δ3-carene, and dipentene are isomerized on silica gel under the conditions of adsorptional analysis: α-pinene is isomerized to camphene, dipentene, and terpinolene; Δ3-carene to dipentene and terpinolene: and dipentene to terpinolene, which then undergoes further transformation. In the first two cases the terpinolene is formed by the isomerization of dipentene. 2. The isomerization of α-pinene, Δ3-carene, and dipentene by silica gel under the conditions of adsorptional analysis is analogous to their isomerization by activated clays at temperatures close to the boiling points of the hydrocarbons. 3. The results obtained for the isomerization of α -pinene by silica gel under the conditions of adsorptional analysis do not accord with the assertion by Tishchenko and Rudakov concerning the indifference of "samples of highly active silica gel" with respect to pinene. © 1953 Consultants Bureau, Inc

    Structure of the (-)-alcohol obtained in the oxidation of 3-carene with oxygen in presence of chromic anhydride

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    1. The dienic (-)-alcohol obtained in the oxidation of 3-carene with oxygen in presence of CrO3 is probably m-mentha-4,6-dien-2-ol. 2. Among the products of the oxidation of 3-carene with oxygen in presence of chromic anhydride, in addition to those found previously [1], carvacrol and m-cymen-6-ol were found. © 1966 Consultants Bureau Enterprises, Inc

    Oxidation of 3-carene by lead tetraacetate in acetic acid

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    1. The oxidation of 3-carene with P (OAc)4 in acetic acid was studied. The following were found in the reaction products: m-methylisopropenylbenzene; 3,6,6-trimethylcycloheptadiene-2,4-one-1; 3-acetyl-6,6-dimethylbicyclo-[3,1,0]-hexane; the acetate of carene-4(7)-ol-3; an acetate with the presumed structure of the acetate of p-menthadiene-1,8(9)-ol-5; the acetate of 2-m-tolylpropanol-2; the acetate of trans-2,4-caranediol. 2. During the reaction there are rearrangements of the carene structure to p- and m-menthadiene, bicyclo-[3,1,0]-hexane, and cycloheptadiene systems. 3. The difference in the course of the oxidation of 3-carene with Pb(OAc)4 in acetic acid and in benzene was obtained by the influence of temperature and solvent. © 1970 Consultants Bureau

    Oxidation of 3-carene with Pb(OAc)4 in benzene

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    The products of the oxidation of 3-carene with lead tetraacetate in benzene contain, besides the previously identified compounds, also the acetates of trans-4-caren-3-ol, m-mentha-1,3-dien-8-ol and 2-(m-tolyl)-2-propanol, which serves to confirm the assumption that the given reaction proceeds in two directions: a) with the formation of the allylic organolead derivative; and b) of the adduct of 3-carene with Pb(OAc)4, as intermediate products. © 1973 Consultants Bureau

    Hydroxymercuration-demercuration of (±)-pinol

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    The hydroxymercuration-demercuration of (±)-pinol leads to (±)-4α-hydroxypinol. © 1982 Plenum Publishing Corporation

    Oxidation of 3-carene with oxygen in presence of chromig anhydride

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    1. The oxidation of 3-carene with oxygtn in presence of CrO3 proceeds with predominant formation of ketones. 2. The primary products of the reaction are probably hydroperoxides, which decompose under the influence of the catalyst to ketones and alcohols. 3. The formation of the products described is accompanied by profound structural changes in the 3-carene. © 1963 Consultants Bureau Enterprises Inc

    Structures of unsaturated acetic esters formed in the reaction of 2-pinene oxide with acetic anhydride

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    The bicyclic acetate obtained in the reaction of 2-pinene oxide with acetic anhydride is a mixture of (-)-and (±)-trans-pinocarveol acetates; one of the monocyclic acetates obtained is a mixture of (+) and (±)-trans-carveol acetates. © 1966 Consultants Bureau

    Reaction of 2,3-epoxypinane with methanol in presence of sodium methoxide

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    1. Under the action of sodium methoxide in methanol 2,3-epoxypinane forms trans-2(10)-pinen-3-ol (mixture of l- and d l-forms) and 3-pinanone (mixture of d- and d l-forms). 2. Under the conditions of the reaction of 2,3-epoxypinane with methanol 3-pinanone may be formed in two ways: 1) mainly directly by the isomerization of the epoxide into the ketone, and 2) by the isomerization of the primary reaction product 2(10)-pinen-3-ol under the action of the base. © 1968 Consultants Bureau
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