Imino-phosphine complexes

Other catalytic systems were used recently, namely a Ddppi system (67, Scheme 8.14) for dicyclopentadiene and di(methylcyclopentadiene) [96] and imino-phosphine complexes (Scheme 8.19, 97 and 98) or hybrid terdentate carbene hgand complexes (99) [133] for norbornene. Furtlierrnore, the copolymerization of various substituted norbomadienes and norbomenes has been achieved with Rh6(CO)i6 under water gas shift reaction conditions (55 ""C, water and 100 atm CO) [134],... 

Wirringa et al. obtained an unusual l,3-diaza-2-phosphaallyl(methylzinc) complex (Figure 44, 85), featuring a two-coordinate phosphorus atom, from the deprotonation of a bulky amino(imino)phosphine with dimethylzinc.144... 

Ferraris et al.108 demonstrated an asymmetric Mannich-type reaction using chiral late-transition metal phosphine complexes as the catalyst. As shown in Scheme 3-59, the enantioselective addition of enol silyl ether to a-imino esters proceeds at —80°C, providing the product with moderate yield but very high enantioselectivity (over 99%). 

Lectka and co-workers found that cationic Cu phosphine complexes are efficient Lewis acids in the activation of a-imino esters (248). The Tol-BINAP was found to be the most effective ligand providing the adduct of acetophenone enol-... 

The cationic Pd(II)-7i-allyl complexes of the formula [(Ligand)Pd(ri3-C3H5)]PF6 (Ligand = ferrocenyl imino-phosphine la-e) were isolated in the solid state by the literature procedure15,61 using [(ri3-C3H5)PdCl]2 as starting material.[7] The complexes obtained were used as catalyst precursors for the asymmetric allylic... 

Thus, organosilicon hydrides can serve as reducing agents like metal hydrides so far as the catalytic hydrosilylation is effectively achieved. To date, rhodium(I)-phosphine complexes have been found to be by far the most useful catalysts for these purposes, especially for the asymmetric reduction of carbonyl and imino compounds. 

Multiple, successive insertion of isonitriles into the palladium-carbon o--bond has also been found with organopalladium(II)bis(phosphine) complexes. However, unlike the Ni- catalyzed polymerization, only single, double, and triple insertion reactions of isonitriles have been reported for Pd-mediated reactions. For instance, reaction of methylpalladium(II) complex 2 with cyclohexyl isonitrile in ratios of 1 1, 1 2, and 1 3 afforded selectively single (3), double (4), and triple (5) insertion products, respectively (Scheme 3). However, no further insertion of cyclohexyl isonitrile to 5 took place. No reactivity of the triple insertion complex 5 was explained by the intramolecular coordination of the nitrogen atom of the third imino group, which formed a stable five-mem-bered chelating palladium complex. 

Single-photon emission computed tomography Tricarbonyltris(2-methoxyisobutyl isonitrile)99mTc complex Hexakis(2-ethoxy-isobutylisonitrile)99mTc complex trans[(l,2-Bis(dihydro-2,2,5,5-tetramethyl-3(2H)furanone-4-methylene-imino)ethane) bis(tris(3-methoxy-l-propyl)phosphine)]99mTc complex Hexakis(2-methoxyisobutyl isonitrile)"mTc complex [l,2-Bis bis(2-ethoxyethyl)phosphino ethane]20299mTc complex... 

Adenosine triphosphate alkali metal complexes, 34 vanadyl complexes, 568 Alane, 123 amine adducts, 107 phosphine adducts, 111 Alane, alkoxy-, 124 Alane, amino-, 109 Alane, imino-, 109 Alkali metal complexes, 1-70 acid anions, 30 acid salts, 30 bipyridyl, 13 crown ethers cavity size, 38 cryptates... 

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