Photolysis of [Tp*Rh(eta4-1,5-COD)] 1 (Tp* = hydridotris(3,5-dimethylpyrazolyl)borate, 1,5-COD = cyclooctadiene) in benzene at 400 nm gives a quantitative yield of the new compound [Tp*Rh(eta4-1,3-COD)] 2. Selected photolysis of 2 at 336 nm can be used to produce (a) hydrido-phenyl-phosphite[Tp*Rh(H)(C6H5)P(OMe)3], (b) hydrido-carbonyl [Tp*Rh(H)2(CO)], (c) chelate [Tp*Rh(C6H5)(CH2CH2COOt-Bu] when the photoreactions were made in the presence of P(OMe)3, CH3OH and t-Bu-acrylate, respectively. These results are interpreted in terms of oxidative addition reactions by the reactive intermediates photogenerated in the Rh system 2.
Generation of [Tp*Rh(eta4-1,3COD)] (Tp*=hydridotris(3,5-dimethyl)pyrazolylborate, 1,3-COD= cyclooctadiene) and its potential in C-H bond activation.
BOARETTO, Rita;SOSTERO, Silvana;TRAVERSO, Orazio
2003
Abstract
Photolysis of [Tp*Rh(eta4-1,5-COD)] 1 (Tp* = hydridotris(3,5-dimethylpyrazolyl)borate, 1,5-COD = cyclooctadiene) in benzene at 400 nm gives a quantitative yield of the new compound [Tp*Rh(eta4-1,3-COD)] 2. Selected photolysis of 2 at 336 nm can be used to produce (a) hydrido-phenyl-phosphite[Tp*Rh(H)(C6H5)P(OMe)3], (b) hydrido-carbonyl [Tp*Rh(H)2(CO)], (c) chelate [Tp*Rh(C6H5)(CH2CH2COOt-Bu] when the photoreactions were made in the presence of P(OMe)3, CH3OH and t-Bu-acrylate, respectively. These results are interpreted in terms of oxidative addition reactions by the reactive intermediates photogenerated in the Rh system 2.File in questo prodotto:
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