Nickel-catalyzed reduction of ketones with water and triethylsilane
作者:Nahury Castellanos-Blanco、Marcos Flores-Alamo、Juventino J. García
DOI:10.1016/j.ica.2017.06.035
日期:2017.9
method to access a new methodology of transferhydrogenation of ketones. When triethylsilane (Et3SiH) was used as sacrificial agent to promote the transferhydrogenation from water, 1-phenylethanol (2a) was obtained in excellent yield along with silanol (Et3SiOH) as the reaction’s driving force. Deuteriumlabelingstudies were made using Et3SiD or D2O and these studies showed that both compounds participate
(EN) The present invention provides compounds of formula (I) in which R is as defined in the specification, or a pharmaceutically acceptable metabolically labile ester or amide thereof, or a pharmaceutically acceptable salt thereof, which are useful as antagonists of one or more of the actions of L-glutamate at metabotropic excitatory amino acid receptors.(FR) Cette invention concerne des composés de formule (I), dans laquelle R est tel que défini dans le descriptif, ou un ester ou amide pharmaceutiquement acceptable de ces composés qui est métaboliquement labile, ou encore un sel pharmaceutiquement acceptable de ces composés, qu'on utilise comme antagonistes d'une ou de plusieurs actions du L-glutamate au niveau des récepteurs d'acides aminés excitateurs métabotropiques.
Diamidic and dicarbamic bispidinones show trans-cis isomerism, the relative population in solution of the cis form increasing with solvent polarity. The mutual proximity of the two amide functions in 4a has no impact on the barrier to isomerization. The system represents a peculiar case of planar chirality posing a challenge to its specification.