O-Dimethylaminophenyl

A combined system of the BINAP-Ir complex and bis(o-dimethylaminophenyl)phenylphosphine or (o-dimethyl-aminophenyl)diphenylphosphine catalyzes hydrogenation of benzylideneacetone and cyclic aromatic ketones with modest to high enantioselectivities (eq 25). 

The main types (1955-57) are exemplified by o-dimethylaminophenyl-dimethylarsine (LXII) (37) j o-dimethylaminophenyldiethylphosphine (LXIII) (38) f o-diethylphosphinophenyldiethylarsine (LXIV) (75), and 4-methyl-o-phenylenebis(diethylphosphine) (10, 14)-... 

Also HR of 4,5-dihydrofuran, attached to the chiral o-dimethylaminophenyl-sulfoxide 328, with iodobenzene afforded the coupling product 329 with 94% diastereoselectivity [134]. The efficient asymmetric induction occurred by the coordination of Ph-Pd-1 to the amino group. A similar effect of the chiral sulfoxide was observed in the intramolecular HR [135]. 

The formation of /n r-[Rh(L)(L )(RNH2)Cl2] ion from the reaction of trans [Rh(L)2Cl2]+ ion with RNH2 (L=A, /4j-bonded o-dimethylaminophenyl-dimethylarsine, and L is the same ligand co-ordinated only through the As-donor atom) was described in Chapter 5 (ref. 151). 

L and L are chelated (N- and As-donor) and unidentate (As-donor only) (o-dimethylaminophenyl)dimethylarsine respectively]. The rate of the forward reaction is reported to depend on the electrolyte concentration (NaC104, EtsNClO, and LiNOs were used) and to increase sharply with the solvent polarity. The activation parameters are said to support the proposed dissociative mechanism. An 5 Nl(ip) mechanism is suggested for the reverse reaction. Activation parameters for both forward and reverse reactions were obtained in methanol, ethanol, propan-l-ol, and propan-2-ol. 

Formation of the /ra/is-CRhL sCIs] ion from wer-[RhL L Cl3] by chelate-ring closure [L and L correspond to bidentate and unidentate (As-donor only) (o-dimethylaminophenyl)dimethylarsine respectively] shows a dependence on the concentration of added electrolyte (NaC104, Et4NQ04, and LiNOg were used) and the rate increases sharply with solvent polarity. The reverse reaction shows a linear... 

In the series NHR. CO. O. CgH. NMe all the members tried in which R is a methyl group were active, but when R is ethyl or hydrogen, miotic action is reduced or may even disappear, thus the p and m-dimethylaminophenyl esters of ethylcarbamic acid (R = C2H5) are inactive but the o-ester is active, indicating that activity is also influenced by the position and nature of the basic group. When the tertiary basic... 

Similarly, the pyridyl fullerenes 30 and 31 also axially bind to ZnNcCBu)4 (28) to form supramolecular triads in which the zinc(II) naphthalocyanine acts as an electron donor, the pyridyl fullerenes act as primary electron acceptors, and either the ferrocene (Fc) or iV,iV-dimethylaminophenyl (DMA) moiety serves as a second electron donor [43], Fig. 2 shows the optimized structures of the resulting triads calculated by density functional theory (DFT), showing that the three components are arranged in a linear fashion. The binding constants of these systems (7.4 x 104M 1 for [ZnNc( Bu)4] 30 and 10.2 x 104M 1 for [ZnNc( Bu)4] 31 in o-dichlorobenzene) determined by UV-Vis spectroscopy are comparable with... 

Diorgan o-4- ox o-4//-tellurin s were converted to tellurinium salts on treatment with ethyl fluorosulfate or 4-dimethylaminophenyl magnesium bromide1-3. 

Kanemitsu and Einami (1990) investigated the role of the polymer on hole transport in a series of 2-(p-dipropylaminophenyl)-4-(p-dimethylaminophenyl)-5-(o-chlorophenyl)-l,3-oxazole (OX) doped polymers. The polymers were a polyarylate (PA), bisphenol-A polycarbonate (PC), poly(methyl methacrylate) (PMMA), poly(styrene) PS, poly(vinyl chloride) (PVC), polyethylene terephthalate) (PET), and poly(vinyl butyral) (PVB). The glass transition temperatures of the polymers range from 322 (PVB) to 448 K (PA). The temporal features of the photocurrent transients were strongly dependent on the polymer. Figure 76 shows the results. The field was 4.0 x H)5 V/cm and the temperature 295 K. The transients were near rectangular for PS, PET, PA, and PMMA, and highly dispersive for PVC land PVB. This was attributed to the fact... 

Kanemitsu et al. (1989) observed decreased charge acceptance after prolonged irradiation of polymers doped with the hole transport molecule 2-(p-dipropylaminophenyl) -4- (p-dimethylaminophenyl) -5- (o-chlorophenyl) -1,3-oxazole. The effects depended on the polymer. A mechanism involving photo-induced charge transfer was proposed. Stolle et al. (1987) made a similar observation in studies of polymer photoconductors such as poly(N-vinyl-... 

Dimeric aryl derivatives of Cr form by reactions of aryllithium compounds with CrCls. Chromium(II) products are formed from p-dimethylaminophenyl, o-anisole, and o-oxyphenyllithium reagents ... 

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