39646-84-9

Upstream product

• 2292-79-7 diamantane 
• 121-46-0 bicyclo[2.2.1]hepta-2,5-diene 
• 32401-20-0 4,9-dichlorodiamantane 
• 13002-57-8 heptacyclo<8,4,0,0^2,12,0^3,8,0^4,6,0^5,9,0^11,13>tetradecane 
• 30545-24-5 3-hydroxydiamantane 
• 30651-02-6 4,9-dibromodiamantane 

Relevant academic research and scientific papers

Diamondoid Nanostructures as sp3-Carbon-Based Gas Sensors

Diamondoids, sp3-hybridized nanometer-sized diamond-like hydrocarbons (nanodiamonds), difunctionalized with hydroxy and primary phosphine oxide groups, enable the assembly of the first sp3-C-based chemical sensors by vapor deposition. Both pristine nanodiamonds and palladium nanolayered composites can be used to detect toxic NO2 and NH3 gases. This carbon-based gas sensor technology allows reversible NO2 detection down to 50 ppb and NH3 detection at 25–100 ppm concentration with fast response and recovery processes at 100 °C. Reversible gas adsorption and detection is compatible with 50 % humidity conditions. Semiconducting p-type sensing properties are achieved from devices based on primary phosphine–diamantanol, in which high specific area (ca. 140 m2 g?1) and channel nanoporosity derive from H-bonding.

Selective apical bromination of diamantane and conversion to the dihydroxy and dicarboxylic acid derivatives

New conditions have been found that provide for the selective bromination of diamantane at the 4,9-positions. Subsequent hydrolysis and Koch-Haaf reaction gave the 4,9-dihydroxy- and 4,9-dicarboxylic acid derivatives, respectively. Copyright Taylor & Francis Group, LLC.

Nanodiamond-Palladium Core–Shell Organohybrid Synthesis: A Mild Vapor-Phase Procedure Enabling Nanolayering Metal onto Functionalized sp3-Carbon

A novel approach for the bottom-up construction of hybrid organic–inorganic nanocomposites with an intimate arrangement between sp3-carbon 3D molecular-size nanodiamonds (diamondoids) and a coated palladium surface as nanolayer is reported. The construction process is conducted stepwisely from the gas phase, using first controlled vapor-phase self-assembly of tailor-made functionalized diamantane derivatives, followed by low-temperature (45 °C) chemical vapor deposition of an organometallic complex in a reducing H2 atmosphere over the self-assembled diamondoid scaffold. The use of self-assemblies of primary diamantane phosphine and phosphine oxide, which are produced with high structural uniformity and reproducibility, yields new hybrid diamondoid-palladium materials incorporating Pd?O?PH?diamantane bonding motifs. Additional investigations provide evidence for a very challenging issue in the intimate construction of sp3-C/metal scaffolds. Scanning electron microscopy and transmission electron microscopy microscopies combined with X-ray photoelectron spectroscopy surface analysis and EDX bulk analysis confirm the formation of diamondoid-palladium organohybrids with unique surface layering. The vapor phase-controlled mild synthetic process allows excellent control over nanocomposite formation and morphology from molecular-level modifications. As such, this bottom-up composite building process bridges scales from the molecular (functionalized diamondoids) over nanoscopic (self-assemblies) to microscopic regime (hybrids), in the challenging association of transition metals with an electronically saturated sp3-carbon organic host material.

Synthesis of noradamantane derivatives by ring-contraction of the adamantane framework

We describe a triflic acid promoted cascade reaction of adamantane derivatives consisting of a decarboxylation of N-methyl protected cyclic carbamates and a subsequent intramolecular nucleophilic 1,2-alkyl shift to generate ring contracted iminium triflates. This reaction expands the family of similar transformations, such as Wagner-Meerwein-, Demjanov-Tiffeneau-, Meinwald- or (semi-)pinacol-rearrangement. It allows the preparation of noradamantane derivatives in a few steps, starting from simple hydroxy-substituted adamantane precursors.

METHOD FOR PRODUCING POLYMERIZABLE HYDROXYDIAMANTYL ESTER COMPOUND

The present invention discloses a method for producing a polymerizable hydroxydiamantyl ester compound, which comprises di-halogenating a raw material compound having a diamantane skeleton, such as diamantane or the like, then hydrolyzing the di-halogenation product to produce a 4,9-diamantanediol compound, thereafter esterifying the 4,9-diamantanediol compound in a mixture of a polymerizable unsaturated carboxylic acid and a polymerizable unsaturated carboxylic acid anhydride in the presence of a polymerization inhibitor and an acid catalyst, to obtain a polymerizable hydroxydiamantyl ester compound.

Hydroxy derivatives of diamantane, triamantane, and [121]tetramantane: Selective preparation of bis-apical derivatives

Functionalizations of diamantane, triamantane, and tetramantane with electrophihc reagents (Br2, nitric acid) lead to various apical and medial disubstituted products that were separated and characterized individually. The highly desirable and otherwise inaccessible thermodynamically more stable apical bis-derivatives were obtained with high preparative yields through acid catalyzed isomerizations. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.

METHOD FOR PRODUCING POLYHALOGENATED DIAMANTANE AND DERIVATIVE THEREOF

The present invention discloses a method for producing a polyhalogenated diamantane, characterized by reacting a diamantane with a halosulfonic acid; and a method for producing a diamantanepolyol, characterized by reacting a polyhalogenated diamantane produced by the above-described method, with water in the presence of a water-soluble organic solvent and a carboxylic acid salt.

SYNTHESIS OF DIAMANTANEDICARBOXYLIC ACIDS WITH THE CARBOXY GROUPS BONDED AT TERTIARY CARBON ATOMS

The preparation of diamantanedicarboxylic acids with the carboxy groups at the tertiary carbon atoms of the diamantane skeleton is described.The procedure comprises bromination or oxidation of 1- and 4-diamantanecarboxylic acids and Koch-Haaf carboxylation of the reaction products.Of the four diamantanedicarboxylic acids synthesized, two - 1,4- and 1,7-diamantanedicarboxylic acids - have not been so far described.