274-07-7Relevant articles and documents
Boryl-dihydrideborate osmium complexes: Preparation, structure, and dynamic behavior in solution
Esteruelas, Miguel A.,López, Ana M.,Mora, Malka,O?ate, Enrique
, p. 941 - 946 (2015)
The metal fragment Os(CO)(PiPr3)2 stabilizes boryl-dihydrideborate species, which can be viewed as snapshots of states of B-H oxidative addition of a R2BH molecule and frustrated B-H bond activation of a second one. Complex OsH2(η2-CH2=CHEt)(CO)(PiPr3)2 (2) shows a tendency to dissociate the olefin. The resulting dihydride OsH2(CO)(PiPr3)2 (3) rapidly coordinates catecholborane (HBcat) and pinacolborane (HBpin) to give the corresponding σ-borane derivatives OsH2(η2-HBR2)(CO)(PiPr3)2 (BR2 = Bcat (4), Bpin (5)). Complex 4 reacts with a second molecule of HBcat to release H2 and to afford the octahedral boryl dihydride borate derivative Os(Bcat)(κ2-H2Bcat)(CO)(PiPr3)2 (6), which undergoes a thermally activated Bcat site exchange process in solution. Borane displaces catecholborane from the dihydride-borate of 6 to generate the boryl-tetrahydrideborate Os(Bcat)(κ2-H2BH2)(CO)(PiPr3)2 (7). This compound and the Bpin counterpart Os(Bpin)(κ2-H2BH2)(CO)(PiPr3)2 (8) have also been prepared by reaction of the corresponding Os(BR2)Cl(CO)(PiPr3)2 with Na[BH4].
Kinetics of the reduction of pinacolone by borane-dimethyl sulfide and catecholborane in THF
Eckhardt, Conrad,Jockel, Holger,Schmidt, Reinhard
, p. 2155 - 2162 (1999)
The kinetics of the reduction of the ketone, pinacolone by borane-dimethyl sulfide and catecholborane have been investigated in tetrahydrofuran. Both overall reactions are composed of several subsequent and in part competing reactions. The use of commerci
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May,S.W. et al.
, p. 2017 - 2024 (1977)
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Trans -2 - substituted cycloalkyl three fluoro potassium borate synthesis method (by machine translation)
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Paragraph 0022, (2019/04/04)
The invention discloses trans - 2 - substituted cyclohexyl three fluoro potassium borate synthesis method, which belongs to the field of organic synthesis. From the cyclic ketone starting curing and reagent or lithium reagent addition subsequently dehydrated and gets substituted alkenes, subsequently with the catechol borane or after aminol borane addition reaction, fluorine hydride potassium direct quenching treatment to obtain trans - 2 - substituted cyclohexyl three fluoro potassium borate, the catechol borane to obtain the racemate product, [...] photoinitiators enantiomerically pure product. The method has low cost, convenient source of raw materials, the operation is simple, and has industrial amplifying of the prospect. (by machine translation)
PYRIDO[4,3-B]INDOLE AND PYRIDO[3,4-B]INDOLE DERIVATIVES AND METHODS OF USE
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Page/Page column 101, (2011/09/19)
This disclosure is directed to pyrido[4,3-b]indole and pyrido [3,4-b] indole derivatives. Pharmaceutical compositions comprising the compounds are also provided, as are methods of using the compounds in a variety of therapeutic applications, including the treatment of a cognitive disorder, psychotic disorder, neurotransmitter-mediated disorder and/or a neuronal disorder.