52829-98-8Relevant academic research and scientific papers
Dynamic Kinetic Resolution of Alcohols by Enantioselective Silylation Enabled by Two Orthogonal Transition-Metal Catalysts
Oestreich, Martin,Seliger, Jan
supporting information, p. 247 - 251 (2020/10/29)
A nonenzymatic dynamic kinetic resolution of acyclic and cyclic benzylic alcohols is reported. The approach merges rapid transition-metal-catalyzed alcohol racemization and enantioselective Cu-H-catalyzed dehydrogenative Si-O coupling of alcohols and hydrosilanes. The catalytic processes are orthogonal, and the racemization catalyst does not promote any background reactions such as the racemization of the silyl ether and its unselective formation. Often-used ruthenium half-sandwich complexes are not suitable but a bifunctional ruthenium pincer complex perfectly fulfills this purpose. By this, enantioselective silylation of racemic alcohol mixtures is achieved in high yields and with good levels of enantioselection.
ATF6 MODULATORS AND USES THEREOF
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Paragraph 263, (2021/04/17)
Compounds (1-2) as modulators of Activating Transcription Factor 6 (ATF6) are provided. The compounds may find use as therapeutic agents for the treatment of diseases or disorders mediated by ATF6 and may find particular use in the treatment of viral infections, neurodegenerative diseases, vascular diseases, or cancer. (Formula (1-2))
Enantioconvergent alkylation of ketones with racemic secondary alcohols: Via hydrogen borrowing catalysis
Cheang, Daniella M. J.,Armstrong, Roly J.,Akhtar, Wasim M.,Donohoe, Timothy J.
supporting information, p. 3543 - 3546 (2020/04/03)
An enantioconvergent method for the alkylation of o-disubstituted aryl ketones with racemic secondary alcohols is described. This process is mediated by a commercially available iridium catalyst and proceeds via hydrogen borrowing catalysis. The highly enantioenriched β-substituted ketone products were readily cleaved to a wide range of functional groups via retro-Friedel-Crafts acylation.
Synthesis of ruthenium (II) complexes containing a dihydroperimidine- derived phosphine ligand and their application in transfer hydrogenation of ketones
Fu, Qi,Zhang, Lei,Yi, Tao,Zou, Mingjun,Wang, Xiaoyan,Fu, Haiyan,Li, Ruixiang,Chen, Hua
, p. 28 - 32 (2013/11/19)
The new ruthenium (II) phosphine complexes (η6-C 6H6)RuCl2[μ- (PPh2CH 2N)2CH2(C10H6)]RuCl 2(η6-C6H6) (1) and RuCl 2(PPh3)[(PPh2CH2N) 2CH2(C10H6)] (2) were synthesized and characterized by 1H NMR, 31P {1H} NMR and elemental analysis. Moreover, the structure of ruthenium (II) phosphine complex 1 was confirmed by X-ray crystallography. With complex 1 as the catalyst, the transfer hydrogenation of ketones reacted well, affording the corresponding alcohols in good yields under mild conditions.
Investigation of cyclization reactions of dicyclohexyl-6-iodo- and -6-tosylhexenylborane. A facile radical cyclization diverted to a rearrangement-cyclization with base
Hinkens, Diane M.,Midland, M. Mark
experimental part, p. 4143 - 4148 (2009/09/25)
(Chemical Equation Presented) Dicyclohexyl-6-iodohexenylborane efficiently undergoes radical cyclization at room temperature using tri-n-butyltin hydride as a hydrogen donor and without the aide of a radical initiator. Efforts to develop environmentally f
Autoxidation of Vinylcyclopentane, Vinylcyclohexane, and 4-Vinylcyclohex-1-ene
Biela, R.,Bilas, W.,Ihsan, U.,Pritzkow, W.,Schmidt-Renner, W.
, p. 893 - 900 (2007/10/02)
The title olefins were oxidized with molecular oxygen at 75-80 deg C.About 40percent of the oxygen absorbed were found by iodometric titration as peroxidic oxygen.The reaction products were analyzed by a combination of chemical methods, gas chromatography, and 13C-n.m.r.-spectroscopy.Vinylcyclopentane and vinylcyclohexane are attacked preferably at the tertiary allylic C-H-bonds giving almost equimolar mixtures of the corresponding allylisomeric hydroperoxides.In the case of 4-vinylcyclohex-1-ene the C-H-bonds in position 6 are preferably attacked, but products of attack on the other allylic C-H-bonds also could be identified.In all cases the amount of products which could not be detected gaschromatographically was determined by balance experiments in the presence of an internal standard.
DIMETHYLALUMINUM CHLORIDE CATALYZED ENE REACTIONS OF ALDEHYDES.
Snider,Rodini,Kirk,Cordova
, p. 555 - 563 (2007/10/02)
Dimethylaluminum chloride, which is a mild Lewis acid and a proton scavenger, catalyzes the ene reactions of aliphatic and aromatic aldehydes with alkenes containing a disubstituted vinylic carbon. Proton-initiated rearrangements do not occur, since the alcohol-Lewis acid complex formed in the ene reaction reacts rapidly to give methane and a nonacidic aluminum alkoxide. Formaldehyde and excess Me//2AlCl give good yields of ene adducts with all types of alkenes. With 1 equiv of Me//2AlCl, formaldehyde and mono- and 1,2-disubstituted alkenes give gamma -chloro alcohols resulting from cis addition of chlorine and hydroxymethyl groups to the double bond. This work is pertinent to the synthesis of alcohols.
