1199-99-1Relevant articles and documents
Energetics of Intramolecular Photoassociation in 3-Phenyl-1-(dimethylamino)propane in the Vapor Phase
Halpern, Arthur M.
, p. 6484 - 6489 (1984)
The photophysical properties of 3-phenyl-1-(dimethylamino)propane (I) are reported in the vapor phase under collision-free conditions.The absorption spectrum is interpreted as the sum of noninteracting phenyl and amino chromophores.Excitation at 265 nm (n
Miltiphoton Ionization Mass Spectrometric Studies of a Bichromophoric Molecule: 3-Phenyl-1-(N,N-dimethylamino)propane
Lichtin, D. A.,Squire, D. W.,Winnik, M. A.,Bernstein, R. B.
, p. 2109 - 2117 (1983)
Multiphoton ionization (MPI) fragmentation studies of the bichromophoric molecule 3-phenyl-1-(N,N-dimethylamino)propane (P3NM) have been conducted in the wavelength regions 415 - 530 and 372 - 377 nm.These correspond respectively to the two-photon Lb
Screening and characterization of a diverse panel of metagenomic imine reductases for biocatalytic reductive amination
Marshall, James R.,Yao, Peiyuan,Montgomery, Sarah L.,Finnigan, James D.,Thorpe, Thomas W.,Palmer, Ryan B.,Mangas-Sanchez, Juan,Duncan, Richard A. M.,Heath, Rachel S.,Graham, Kirsty M.,Cook, Darren J.,Charnock, Simon J.,Turner, Nicholas J.
, p. 140 - 148 (2021)
Finding faster and simpler ways to screen protein sequence space to enable the identification of new biocatalysts for asymmetric synthesis remains both a challenge and a rate-limiting step in enzyme discovery. Biocatalytic strategies for the synthesis of chiral amines are increasingly attractive and include enzymatic asymmetric reductive amination, which offers an efficient route to many of these high-value compounds. Here we report the discovery of over 300 new imine reductases and the production of a large (384 enzymes) and sequence-diverse panel of imine reductases available for screening. We also report the development of a facile high-throughput screen to interrogate their activity. Through this approach we identified imine reductase biocatalysts capable of accepting structurally demanding ketones and amines, which include the preparative synthesis of N-substituted β-amino ester derivatives via a dynamic kinetic resolution process, with excellent yields and stereochemical purities. [Figure not available: see fulltext.]
Palladium-Catalyzed Cross-Coupling of Superbase-Generated C(sp3) Nucleophiles
Freure, Garrett P. R.,Lavertu, Jean-Danick E.,Newman, Stephen G.,Skrotzki, Eric A.
, p. 12258 - 12263 (2021/10/26)
A range of methods has been investigated recently for the arylation of weakly acidic C(sp3)-H bonds, primarily exploiting directed metalation with a transition metal catalyst or radical formation via hydrogen atom transfer. In this work, a classical base-mediated approach is taken, exploiting the ability of organometallic superbases to metalate very weakly acidic (pKa> 40) C-H bonds. Conditions are developed with eithern-BuLi/diamine orn-BuLi/KOtBu superbases to enable metalation to occur with high selectivity. Organolithium nucleophiles can be directly used in cross-coupling, or organozincs can be formed to enable reactions with functional group-dense organohalides.
Method for preparing tertiary amine organic compound from photocatalytically decomposing substituted formamide
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Paragraph 0020-0022, (2021/01/12)
The invention discloses a method for preparing a tertiary amine compound from aldehyde and substituted formamide under the action of a photocatalyst. The method is characterized in that the reaction can be performed only by illumination under the conditions of no hydrogen and no reducing agent. The method is suitable for various aldehydes including aromatic aldehydes, fatty aldehydes and the like,has the characteristics of few byproducts and high product yield, does not need to use hydrogen in the reaction, avoids the use of noble metal hydrogenation catalysts, and has obvious technical and economic effects and application prospects.
Method for preparing tertiary amine organic compound by decomposing substituted formamide under mild condition
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Paragraph 0019-0021; 0049, (2021/06/13)
The invention discloses a method for preparing tertiary amine organic compounds by decomposing substituted formamide under mild conditions, which comprises the following steps: heating and stirring aldehydes serving as a reaction substrate, substituted formamide serving as a solvent, a reducing agent and an amination reagent, Ti-based oxide/hydroxide serving as a catalyst and a small amount of water serving as an auxiliary agent to generate the corresponding tertiary amine compound. Hydrogen is not needed in the reaction process. The method can be suitable for various aldehydes including aromatic aldehydes, fatty aldehydes and the like, and has the characteristics of high conversion rate and single product, and the tertiary amine compound can be simply, efficiently and safely synthesized without using hydrogen and noble metals in the reaction, so that the method has remarkable economic effects and application prospects.
Dimethylamination of Primary Alcohols Using a Homogeneous Iridium Catalyst: A Synthetic Method for N, N-Dimethylamine Derivatives
Jeong, Jaeyoung,Fujita, Ken-Ichi
, p. 4053 - 4060 (2021/03/09)
A new catalytic system for N,N-dimethylamination of primary alcohols using aqueous dimethylamine in the absence of additional organic solvents has been developed. The reaction proceeds via borrowing hydrogen processes, which are atom-efficient and environmentally benign. An iridium catalyst bearing an N-heterocyclic carbene (NHC) ligand exhibited high performance, without showing any deactivation under aqueous conditions. In addition, valuable N,N-dimethylamine derivatives, including biologically active and pharmaceutical molecules, were synthesized. The practical application of this methodology was demonstrated by a gram-scale reaction.
NANO-ADHESIVE AND SURFACE PRIMER COMPOUND AND USE THEREOF
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, (2020/07/04)
A compound for self-assembly onto a mineral and/or metal oxides substrate, the compound comprising a catechol group attached to an end group through a spacer group. The compound include a structure of Formula (I):
PRODUCTION OF AMINES VIA A HYDROAMINOMETHYLATION REACTION USING IMINIUM REACTANTS
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Page/Page column 31, (2020/05/14)
Provided is a process for producing an amine via a hydroaminomethylation reaction of a non- aromatic C-C double bond, said process comprising a step of reacting a compound comprising a non-aromatic C-C double bond with an iminium ion in a solvent comprising an alcohol, wherein the iminium ion is represented by the following formula (I): wherein R1 and R2 are independently hydrogen or selected from the group consisting of an aliphatic hydrocarbon group which may be substituted, an aromatic hydrocarbon group which may be substituted, an aliphatic heterocyclic group which may be substituted, an aromatic heterocyclic group which may be substituted and of combinations thereof, such as an aralkyl group which may be substituted; and R1 and R2 may be bonded to each other to form a ring together with the nitrogen atom to which they are bound; and wherein R1 and R2 are not both hydrogen and at least one of R1 and R2 carries a hydrogen atom at a carbon atom in ex? position to the nitrogen atom of the iminium ion.
One-Pot Controlled Reduction of Conjugated Amides by Sequential Double Hydrosilylation Catalyzed by an Iridium(III) Metallacycle
Agbossou-Niedercorn, Francine,Corre, Yann,Djukic, Jean-Pierre,Kalocsai, Dorottya,Michon, Christophe,Nagyházi, Márton,Rysak, Vincent,Trivelli, Xavier
supporting information, p. 6212 - 6220 (2020/10/02)
A single and accessible cationic iridiumIII metallacycle effectively catalyzes the one-pot sequential double hydrosilylation of challenging α,β-unsaturated secondary and tertiary amides to afford, in a controlled and straightforward way, the co
