Tetrabutylammonium cobalt

Et3NH)Sn(SPh)3, tetrabutylammonium cobalt(II)phthalocyanine-5,12,19,26-tet-rasulfonate, CH3CN, MeOH, 20°C, Ih, 90% yield. ... 

N-Acyl-5 -0-(substituted)trityl nucleosides can be benzoylated or p-methoxybenzoylated selectively at 0-2 . The rate of aroyl migration from O-2 to 0-3 is slower for the anisoyl derivatives, and depends on the exact nature of the 5 -0-protection.243 The removal of the 2,2,2-trichloro-l,l-dimethylethoxycarbonyl (trichloro-t-BOC) group from (184) can be done efficiently using Sn(SPh)3 and tetrabutylammonium cobalt(II)... 

Addition of a quaternary ammonium salt to a cobalt-salen catalyst drastically enhances the catalytic performance for the co-polymerization of PO with GO2. Lu and Wang investigated the binary catalyst system that consisted of a cobalt-salen complex and a tetrabutylammonium salt (Table 6). This binary catalyst system is able to promote... 

The reciprocal of the half-lifetime yielded a value for the dye regeneration by Co (dbbip)22+ of about 5 x 105 s-1 against 1.7 x 106s 1 observed in the case of 0.1 M tetrabutylammonium iodide. Contrary to the case of iodide,56 a cooperative effect of adsorbed cations was not observed in the case of cobalt, for which an addition of Li+... 

There has been considerable debate about whether intrazeolitic species are elec-trochemically accessible and recent results on zeolite-encapsulated metal complexes are of interest in this regard. Before we discuss this topic, the role of ion exchange in electrochemical response is discussed. Electroactive transition metal ions can readily be ion exchanged into zeolites. Baker and co-workers reported that a Co +-zeolite Y-ZME resulted in reduction of cobalt ions if Li" was used as the supporting cation in the electrolyte solution, whereas the voltammetric response was absent in the presence of the larger tetrabutylammonium ion (TBA) [166]. Figure 32 compares the voltammetric data for Li+ and TBA. There are two ways to interpret these data ... 

This last reaction is known as the homo-Diels-Alder reaction. A similar reaction has been reported with alkynes, using a mixture of a cobalt complex, Znl2 and tetrabutylammonium borohydride as catalysts. ... 

Morishima, N, Koto, S, Kusuhara, C, Zen, S, One-stage a-glucosylation using tetra-O-benzyl-a-D-glucose and mixture of trimethylsilyl bromide, cobalt(ll) bromide, tetrabutylammonium bromide, and molecular sieve, Chem. Lett., 427-428, 1981. 

Br3CoN40C4Hig H2O, Cobalt(III), aquabro-mobis( 1,2-ethanediamine)-, dibromide, cis-, monohydrate, 21 123 Br4GaNCgH2o, Gallate(l - ), tetrabromo-, tetraethylammonium, 22 141 Br4GaNCi6H3g, Gallate(l - ), tetrabromo-, tetrabutylammonium, 22 139 Br4H26Ng02Rh2, Rhodium(III), di- jL-hy-droxo-bis[tetraamine-, tetrabromide, 24 226... 

ClsN2Re2C32H72, Rhenate(III), octachlorodi-, bis-(tetrabutylammonium), 12 116 CUCs3Lu2> Cesium lutetium chloride, 22 6 Cl7CS Sc2, Cesium scandium chloride, 22 25 CoAgN40 C4H, Cobaltate(III), bis-... 

In Situ Glycosylation System. When TMS-Br is mixed with cobalt(n) bromide, tetrabutylammonium bromide and 4 A molecular sieves a reagent is generated, which activates anomeric hemiacetals toward glycosylation. Equation 39 shows the coupling of a furanose with a pyranoside. The anomeric selectivity is variable and substrate dependant. This method can be used in the formation of more complex polysaccharides. 

Tetrabutylammonium tns(acetyl-acetonato)cobalt(II) and Ni(II) Ion pairing and magnetic ansio-tropy 109, 111... 

The reaction of acetophenone oxime with acetylene (100°C, 3 h) is well catalyzed by all alkali metal hydroxides (taken in 10%-30% from the oxime weight), but Ca(OH)2 is inactive nnder these conditions [160]. Tetrabutylammonium hydroxide exerts weak catalytic action on the reaction only at harsher conditions (120 C). Potassium, zinc, and cadmium acetates as well as zinc, copper (I and II), and cobalt chlorides do not show catalytic activity in this reaction (starting acetophenone oxime is recovered almost completely [160]), though several cations of the aforementioned salts are known [95,162] to be catalysts of direct vinylation of NH-heterocycles with acetylene. 

---