Borate hydro sodium

BNNaC H3, Borate(l -), cyanotri[(W)-hydro]-, sodium, 21 167 BNO2C4H12, Borane, carboxy-compd. with tiimethylamine (1 1), 25 81 BNO2CSH14, Borane, (methoxycarbonyl)-compd. with tiimethylamine (1 1), 25 84 BN2C4H11, Borane, cyano-compd. with tiimethylamine (1 1),... 

BCuN6OCioH10, Copper , car-bonyl[hydrotris(pyrazolato)borato]-, 21 108 BCuN6OCi6H22, Copper , carbonyl[tris(3,5-dimethylpyrazolato)hydroborato]-, 21 109 BCuNsOCisHn, Copper , car-bonyl[tetrakis(pyrazolato)borato]-, 21 110 BNNaC2H3, Borate 1 -), cyanotri[(2//)hydro)-, sodium, 21 167... 

Primary aliphatic nitro compounds can be reduced to nitriles with sodium di-hydro(trithio)borate.584 Secondary compounds give mostly ketones (e.g., nitrocyclohexane... 

Iron(n) salts mediated the coupling of trialkylboranes with KSGN to give RSCN via a radical process.553,554 Stereochemically pure ( )-l-thiocyanato-alkenes or ( )-l-azide-alkenes were obtained from alkynes when hydro-boration with disiamylborane was followed by reaction with potassium thiocyanate or sodium azide in the presence of copper(n) nitrate, copper(n) acetate, and small amount of water in polar aprotic solvent (Equation (116)).555... 

Fig. 5 Electropherogram of a mixed anion standard. Hydro-dynamic injection (15 cm, 120 sec, 39.1 nL) with sodium borate buffer at pH 8. Peak 1 3.2 ppm selenate peak 2 3.6 ppm selenite peak 3 1.9 ppm arenate peak 4 4.4 ppm DMA peak 5 4.7 ppm arsenite. (Reproduced from Ref. [19] with permission of Elsevier Science, copyright 1998.)...

The racemic laudanosine (7g) syntheses were referred to earlier in The Alkaloids (Vol. XII, p. 348). From the racemic mixture it is difficult to obtain (S)-(+)-laudanosine which is widely distributed in nature. The synthesis of its unnatural (R )-form (in poor yields) has been reported (asymmetric reduction of 3,4-dihydropapaverine with lithium butyl-(hydro)dipinan-3a-y borate) (363). Recently, a description of the biogenetic synthesis of these two forms from methyl-L-(+)-3,4-dihy-droxyphenylalaninate hydrochloride by condensation with sodium 3-(3,4-dimethoxyphenyl)glycinate at pH 4 and 35° was given. Thus, a dia-stereoisomeric mixture of the Pictet-Spengler products 11a and lib (ratio... 

Vinylboranes are versatile intermediates, and there are modifications that convert them to alkenes. Hydro-boration of a terminal alkyne such as cyclohexyl acetylene (78) with dicyclohexylborane gave ( )-alkenyl-borane (79). Subsequent treatment with iodine and sodium hydroxide resulted in transfer of an alkyl group from boron to the alkenyl carbon, generating cis-1,2-dicyclohexylethene (80) in 77% yield (92% isomeric... 

Allylic alcohol 6.92 was prepared in about seven steps from tartaric acid and once in hand, treatment with sodium hydride and benzyl bromide gave 6.93. Hydro-boration of the alkene moiety and Jones oxidation of the resultant alcohol gave a carboxylic acid 6.94). Deprotection and ring opening gave R-GABOB. ... 

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