DFT study of the asymmetric nitroaldol (Henry) reaction catalyzed by a dinuclear Zn complex

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

DFT study of the asymmetric nitroaldol (Henry) reaction catalyzed by a dinuclear Zn complex

We report the mechanism of asymmetric nitroaldol (Henry) reaction catalyzed by a dinuclear Zn complex using density functional theory. The experimentally proposed catalytic cycle is validated, in which the first step is the deprotonation of nitromethane by the ethyl anion of the catalyst, subsequently a C-C bond formation step, and then the protonation of the resulting alkoxide. Three mechanist...

متن کامل

Keratin Protein-Catalyzed Nitroaldol (Henry) Reaction and Comparison with Other Biopolymers.

Here we describe a preliminary investigation on the ability of natural keratin to catalyze the nitroaldol (Henry) reaction between aldehydes and nitroalkanes. Both aromatic and heteroaromatic aldehydes bearing strong or moderate electron-withdrawing groups were converted into the corresponding β-nitroalcohol products in both DMSO and in water in the presence of tetrabutylammonium bromide (TBAB)...

متن کامل

Mechanistic investigation of the cleavage of phosphodiester catalyzed by a symmetrical oxyimine-based macrocyclic dinuclear zinc complex: a DFT study.

Density functional theory (DFT) was utilized to investigate the hydrolysis reaction mechanisms of phosphodiester BNPP (BNPP = bis(4-nitrophenyl)phosphate) catalyzed by a symmetrical oxyimine-based macrocyclic dinuclear zinc(ii) complex. We examined the nature of the nucleophilic reagent and the active form of the catalyst. The coordination and binding models of the catalyst-substrate complex we...

متن کامل

Highly enantioselective nitroaldol reaction catalyzed by new chiral copper complexes.

Remarkable generality in scope of DATs/Cu catalysts for enantioselective nitroaldol reaction is described; excellent levels of stereoinduction are recorded for a range of aldehydes (ee 81-99%, 17 examples) and the possibility to employ the present catalytic system as the key step for the preparation of highly functionalized tetrahydro-isoquinolines is demonstrated.

متن کامل

Spectroscopic Study of a Cinchona Alkaloid-Catalyzed Henry Reaction

A spectroscopic study of an organocatalytic Henry reaction between nitroalkanes and aldehydes catalyzed by a quinidine-derived Cinchona alkaloid is described. The binding modes of the reaction substrates are investigated using electronic absorption and fluorescence spectroscopy and further corroborated by nuclear magnetic resonance measurements. Aldehydes are shown to associate with both the 6'...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Computational Chemistry

سال: 2009

ISSN: 0192-8651,1096-987X

DOI: 10.1002/jcc.21422