B-Chlorobis

Schwartz s Reagent Bis(cyclopentadienyl)zirconium chloride hydride Zirconium, chlorodi-B-cyclopentadienylhydro- (8) Zirconium, chlorobis(ii5-2,4-cyclopentadien-1-yl)hydro- (9) (37342-97-5)... 

Herrmann WA, Brossmer C, Reisinger CP, Riermaier T, Ofele K, Beller M (1997) Coordination chemistry and mechanisms of metal-catalyzed C-C coupling reactions. Part 10. Palladacycles efficient new catalysts for the Heck vinylation of aryl halides. Chem Eur J 3 1357-1364 Iyer S, Jayanthi A (2001) Acetylferrocenyloxime palladacycle-catalyzed Heck reactions. Tetrahedron Lett 42 7877-7878 Iyer S, Ramesh C (2000) Aryl-Pd covalently bonded palladacycles, novel amino and oxime catalysts di- x-chlorobis(benzaldehydeoxime-6-C,AT)dipalla-dium(II), di- x-chlorobis(dimethylbenzylamine-6-C,A)dipalladium(II) for the Heck reaction. Tetrahedron Lett 41 8981-8984 Jeffery T (1984) Palladium-catalysed vinylation of organic halides under solid-liquid phase transfer conditions. J Chem Soc Chem Commun 1287-1289 (b) idem,... 

B. megaterium selected with Naphthalene (Nah) Dibenzofuran (DbO p-chlorobi phenyl (pCB)... 

Ahmad, D., Sylvestre, M. Sondossi, M. (1991). Subcloning of bph genes from Pseudomonas testosteroni B-356 in Pseudomonasputida and Escherichia coir, evidence for dehalogenation during initial attackon chlorobi phenyls. Appliedand Environmental Microbiology, 57,2880-7. 

Fig. 12.9 The stroctures of the red, square pyramidal isomer (a) and the green trigonal bipyramidal isomer (b) of the chlorobis[l,2-bis(diphenylphosphino)-ethane]cobalt(II) cation. Phenyl groups and oilier substituents bcve been removed for clarity. [From Stalick, J. K. Corfield, P. W. R. Meek, D. W. Inorg. Cftem. 1973, 12, 1668-1675. Reproduced with permission.]...

Fig. 6.14 (s) Molecular structure of (rans-tetr chlorobis(teiramethyithiourea)te1]uriurri(IV) in the tnonodinic form. Note that the line Cl(4)—Te—Cl(2) approximates an axis for a peniagonal bipyramid if it is assumed that a lone pair occupies a position between S( I) and 0(3) (b). [In part from Esperas, S. George. J. W. Huscbyc. S. Mikalsen. 0. >leto Chem. Scand. 1975. 2M, J4I-I48.]... 

B. [BIS(TRIMETHYLSILYL)METHYLENE][CHLOROBIS-(TRIMETHYLSILYL)METHYL]PHOSPHINE... 

B. [Pg.285]

A novel route for the generation of trialkylboron-carbene complexes has been reported (34). As summarized in Scheme 4, the intial step of the reaction sequence involves the N-complexation of 1,4,5-trimethylimidazole 38 with BEts to form 39, followed by deprotonation and rearrangement of resulting ionic species to 40. The final step involves methylation with Mel to form the desired triethylboron-carbene complex, 41. Compound 41 was characterized by mass spectroscopy and H-, C-, and B NMR spectroscopy the B NMR chemical shift for 41 S -12.6) appears in the tetracoordinate boron region. The 1,4,5-trimethylimidazole 38 is also the source of an unusual boryl-borane compound, 43 (34). Treatment with BH3 thf, followed by deprotonation with "BuLi, resulted in the formation of the ionic carbene/borane complex, 42. In turn, 43 was produced via the addition of chlorobis(dimethylamino)borane to 42. Compound 43 exhibits B NMR chemical shifts at S -21.8 (BH3) and 8 27.8 (BNMe2). In related work, N-methyl-AT-borane complexes 44 and 45 have been de-... 

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