- One-pot synthesis of cage alcohols
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An efficient one-pot procedure has been developed for the synthesis of cage alcohols with hydroxy groups in the bridgehead positions. The procedure includes initial nitroxylation with nitric acid or a mixture of nitric acid with acetic acid and subsequent hydrolysis in the presence of urea.
- Klimochkin, Yu. N.,Yudashkin,Zhilkina,Ivleva,Moiseev,Oshis, Ya. F.
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p. 971 - 976
(2017/09/07)
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- Method for oxidizing adamantane
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PROBLEM TO BE SOLVED: To provide a method for easily and efficiently producing 1,3-dihydroxy adamantane being a compound extremely important as a material for a bifunctional monomer. SOLUTION: A method for producing 1,3-dihydroxy adamantane includes oxidation of adamantane by ozone in solvent containing 60-100 wt.% carboxylic acid of C1-C4, in the presence of an organic molecule catalyst and a transition metal catalyst. The method for producing 1,3-dihydroxy adamantane employs N-hydroxy succinic imide or organic nitroxyl radical compound as the organic molecule catalyst, and cobalt acetate etc. as the transition metal catalyst, to promote reaction. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPO&INPIT
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Paragraph 0043
(2017/05/26)
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- Synthesis of hydroxy derivatives from adamantanecarboxylic acids in the system MnO2–H2SO4
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A convenient procedure has been developed for the synthesis of mono- and dihydric cage alcohols from adamantanecarboxylic acids and their esters using the MnO2–H2SO4system. The reaction at elevated temperature involved both decarboxylation and decarbonylation of the initial acid or ester.
- Ivleva,Gavrilova,Klimochkin, Yu. N.
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p. 785 - 790
(2016/07/30)
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- Compounds for photoresist and resin composition for photoresist
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The photoresist resin composition comprises a polymer having an adamantane skeleton represented by the following formula and a photoactive acid precursor: wherein R1represents a hydrogen atom or a methyl group; R2, R3, and R4are the same or different from each other, each representing a hydrogen atom, a halogen atom, an alkyl group, a hydroxyl group, a hydroxylmethyl group, a carboxyl group, a functional group which forms a hydroxyl group, a hydroxymethyl group or a carboxyl group by elimination with an acid; at least one of the substituents R2to R4is the functional group defined above; X represents an ester bond or an amide bond; and each of m and n is 0 or 1. The above photoresist resin composition is highly resistant to an etching solution, solubilizable by irradiation with light, and capable of giving minute patterns.
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- Malic acid and oxalacetic acid derivatives
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A malic acid or oxalacetic acid derivative is represented by the following formula (1): wherein ring Z is an alicyclic carbon ring; each of Ra and Rb is independently a hydrogen atom, a metal atom, or an organic group; and Y is a hydroxyl group or an oxygen atom, where ring Z is a bridged carbon ring or a monocyclic carbon ring having eight or more members when Y is an oxygen atom. The alicyclic carbon ring includes, for example, cyclooctane ring and adamantane ring. This compound is a novel malic acid derivative having an alicyclic group bonded to a carbon atom at the 3-position, or a novel oxalacetic acid derivative having a specific alicyclic group bonded to a carbon atom at the 3-position.
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- Oxidation of cycloalkanes with potassium peroxosulfate catalyzed by montmorillonite-immobilized metal tetrapyridylporphyrin complexes
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The oxidation of 1,3-dimethyladamantane and cyclooctane with potassium peroxosulfate catalyzed by manganese and iron complexes of alkylated tetrapyridylporphyrin which was either dissolved in a reaction medium or adsorbed on a layered aluminosilicate was studied. The Mn3+ porphyrin complex immobilized in the interlamellar space of montmorillonite modified with titanium hydroxide clusters was found to enhance the catalytic activity and stability against oxidative degradation.
- Avdeev,Bagrii,Maravin,Korolev,Borisov
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p. 391 - 398
(2007/10/03)
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- Oxidation catalytic system and oxidation process using the same
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A substrate (e.g., a cycloalkane, a polycyclic hydrocarbon, an aromatic compound having a methyl group or methylene group adjacent to an aromatic ring) is oxidized with oxygen in the presence of an oxidation catalyst comprising an imide compound of the following formula (1) (e.g., N-hydroxyphthalimide), and a co-catalyst (except phosphovanadomolybdic acid) containing an element selected from the group consisting of Group 2A elements of the Periodic Table of Elements, transition metals (Group 3A to 7A elements, Group 8 elements, Group 1B elements and Group 2B elements of the Periodic Table of Elements) and Group 3B elements of the Periodic Table of Elements, for the formation of an oxide (e.g., a ketone, an alcohol, a carboxylic acid): STR1 wherein R1 and R2 represent a substituent such as a hydrogen atom or a halogen atom, or R1 and R2 may together form a double bond or an aromatic or nonaromatic 5- to 12-membered ring, X is O or OH, and n is 1 to 3.
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- POLYMERIZABLE ADAMANTANE DERIVATIVES AND PROCESS FOR PRODUCING THE SAME
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A compound shown by the following formula: ???wherein each of R1a, R2a, R3aand R4arepresents a substituent selected from a non-reactive atom, a non-reactive group, a hydroxyl group and an amino group, and at least two members selected from R1a, R2a, R3aand R4aare a hydroxyl group, a carboxyl group or an amino group; is subjected to an esterification reaction or an amidation reaction with a polymerizable unsaturated compound (e.g., an alcohol, a carboxylic acid, an amine) in the presence of a catalyst comprising an element selected from the Group 3 elements, such as a samarium compound, to obtain a polymerizable adamantane derivative having at least one polymerizable unsaturated group in high yield.
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- A remarkable effect of quaternary ammonium bromide for the N- hydroxyphthalimide-catalyzed aerobic oxidation of hydrocarbons
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A methodology for the aerobic oxidation of organic substrates in the absence of any metal catalyst has been established using combined catalytic system consisting of N-hydroxyphthalimide and quaternary ammonium bromide. Thus, various hydrocarbons were successfully oxidized under dioxygen atmosphere to the corresponding oxygenated compounds in good selectivities.
- Matsunaka, Katsuhisa,Iwahama, Takahiro,Sakaguchi, Satoshi,Ishii, Yasutaka
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p. 2165 - 2168
(2007/10/03)
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- Diamondoid derivatives for pharmaceutical use
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A method of inhibiting viruses in which a virus is contacted with diamondoid alcohol, ketone, ketone derivative, adamantyl amino acid, quaternary salt or combinations thereof which have antiviral properties. These diamondoid derivatives are shown to have antiviral activity against HIV.
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- Hydroxylation of polycyclic alkanes with molecular oxygen catalyzed by N-hydroxyphthalimide (NHPI) combined with transition metal salts
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Adamantanes were successfully converted into the corresponding mono- and dihydroxy adamantanes with molecular oxygen in the presence of N- hydroxyphthalimide (NHPI) combined with cobalt salts under mild conditions. For example, exposure of adamantane under oxygen atmosphere in the presence of NHPI (10 mol%) and Co(acac)2 (0.5 mol%) in acetic acid at 75 °C for 6 h afforded adamantan-1-ol (43 %) and adamantane-1,3-diol (40 %) along with adamantan-2-one (8 %) in 93 % conversion. Similarly, 1,3-dimethyladamantane produced 3,5-dimethyladamantan-1-ol (47 %) and 5,7-dimethyladamantane-1,3- diol (37 %).
- Ishii, Yasutaka,Kato, Susumu,Iwahama, Takahiro,Sakaguchi, Satoshi
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p. 4993 - 4996
(2007/10/03)
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