Results 131 to 140 of about 757 (176)
Some of the next articles are maybe not open access.
Synthesis of phosphanaphthalenes and nido-carborane fused six-membered phosphacycles
Chinese Chemical Letters, 2021Abstract A simple method to synthesize luminescent λ5-phosphanaphthalenes and zwitterionic nido-carborane fused six-membered phosphacycles was developed from the reaction of ortho-phosphinobenzoaldehydes or ortho-phosphinocarboranylaldehydes with an electron-deficient alkyne, respectively. Similar results were obtained with the imino analogues.
Guanyu Tao +5 more
openaire +1 more source
Synthesis of cholesterol derivatives based on closo- and nido-carboranes
Russian Chemical Bulletin, 20211-(3-Butyn-1-ylthio)-1,2-dicarba-closo-dodecaborane was synthesized by the alkylation of 1-mercapto-1,2-dicarba-closo-dodecaborane trimethylammonium salt with butyn-3-yl methanesulfonate. The deboronation reaction of this compound gave the corresponding derivative based on nido-carborane, namely, 7-(3-butyn-1-ylthio)-7,8-dicarba-undecaborate anion. 1,4-
A. A. Druzina, M. Yu. Stogniy
openaire +1 more source
Synthesis and characterization of nido-carborane-cobalamin conjugates
Nuclear Medicine and Biology, 2000Three vitamin B12 (cyanocobalamin) conjugates bearing one nido-carborane molecule or two nido-carborane molecules linked to the propionamide side chains via a four carbon linker have been synthesized. Reaction of o-carboranoylchloride with 1,4-diaminobutane in pyridine produced nido-carboranoyl(4-amidobutyl)amine, which was linked to the b- and d ...
H P, Hogenkamp +4 more
openaire +2 more sources
Negative ion mass spectra of nido carboranes
Journal of the American Chemical Society, 1972Abstract : The negative ion mass spectra of 2,3-dicarbahexaborane(8), 2-methyl-nido-2,3-dicarbahexaborane(8) and 2,3-dimethylnido-2,3-dicarbahexaborane(8) have been investigated. Evidence has been found to show that formation of negative ions in these nido carboranes predominately via resonance capture and dissociative resonance capture mechanisms ...
Costello L. Brown +2 more
openaire +1 more source
ChemInform Abstract: C2B6H10, A NEW NIDO‐CARBORANE
Chemischer Informationsdienst, 1974AbstractHerstellung der Titelverbindung durch Reaktion von C2B3H5 mit B2H6.
ALAN J. GOTCHER +2 more
openaire +1 more source
On the reaction of nido-carborane with thiourea
Russian Chemical Bulletin, 2016A reaction of the protonated form of 7,8-dicarba-nido-undecaborate anion 7,8-C2B9H13 with thiourea leads to the formation of a mixture of 9- and 10-thiuronium derivatives, the alkaline hydrolysis of which gives a mixture of the corresponding mercapto derivatives of nido-carborane.
S. A. Anufriev +3 more
openaire +1 more source
Tungsten carbonyl σ-complexes of nido-carborane thioethers
Journal of Organometallic Chemistry, 2012Abstract Nido-carborane thioethers Cs[X-(CH2)nSMe-7,8-C2B9H11)] (X = 7, 9, n = 0; X = 9, n = 1) were synthesized and their reactions with tungsten carbonyl W(CO)5(THF) were investigated. The corresponding pentacarbonyl tungsten complexes were isolated as cesium salts and characterized.
Sergey V. Timofeev +6 more
openaire +1 more source
17-Crown-5 ether condensed with 11-vertex nido-carborane
Russian Chemical Bulletin, 2014The reaction of easily accessible nido-carborane [nido-7,8-(HOCH2)2-7,8-C2B9H10]- with tetraethylene glycol tosylate produces nido-carborane sodium salt condensed with 17-crown-5 ether, Na[nido-7,8-O(CH2CH2OCH2CH2OCH2)2-7,8-C2B9H10]. The structures of solvate complexes of this crown ether with acetone, ethanol, and water were studied by X-ray ...
D. S. Perekalin +2 more
openaire +1 more source
Synthesis of new nido-carborane based carboxylic acids and amines
Polyhedron, 2018Abstract A series of new nido-carborane based carboxylic acids 10-HOOC(CH2)n(Me)S-7,8-C2B9H11 (n = 1–4) was prepared by alkylation of tetrabutylammonium salt of 10-methylthio-7,8-dicarba-nido-caborane with ω-halogenoalkyl esters or nitriles followed by acid hydrolysis. Likewise nido-carborane based amines 10-H2N(CH2)n(Me)S-7,8-C2B9H11 (n = 2, 3) were
Svetlana A. Erokhina +5 more
openaire +1 more source
Heterodisubstituted 1,10-dicarba-closo-decaboranes from substituted nido-carborane precursors
Polyhedron, 1999Abstract Mono- and heterodisubstituted 1,10-dicarba- closo -decaboranes 1 have been prepared from substituted nido -carboranes 3 and by carboxylation and arylation of 1-alkyl- p -carboranes. Thermal dehydrogenation followed by skeletal rearrangement of 3 furnished 1 in modest yields.
Zbynek Janoušek, Piotr Kaszynski
openaire +1 more source