Synthesis of New Imino Containing Tetrahydrochromeno[2,3-d]pyrimidines
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Heterocyclic Chemistry"
DOI: 10.1002/jhet.2729
Abstract: Some new derivatives of 3,5-diaryl-4-imino-5,7,8,9-tetrahydro-3H-chromeno[2,3-d]pyrimidine have been prepared through a condensation reaction of 2-amino-4-aryl-3-cyano-5,6,7,8-tetrahydrobenzo[b]pyrans with triethyl orthoformate in boiling acetic anhydride followed by cyclization with primary aryl amines in the presence of a few drops… read more here.
Keywords: containing tetrahydrochromeno; synthesis new; imino containing; imino ... See more keywords
Structural and ethylene oligomerization studies of chelated NˆO (imino/amino)phenol nickel(II) complexes
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Organometallic Chemistry"
DOI: 10.1016/j.jorganchem.2017.05.050
Abstract: Abstract Condensation reactions of 2-aminoethanol with the appropriate aldehyde gave ligands 2-[1-[(2-hydroxyethyl)imino]ethyl]phenol (L1) and 2-[(2-hydroxyethyl)imino] methyl]phenol (L2) respectively. Subsequent reductions of L1 and L2 with NaBH4 afforded the corresponding amine ligands 2-[1-[(2-hydroxyethyl)amino]ethyl]phenol (L3) and 2-{[(2-hydroxyethyl)amino]methyl}phenol… read more here.
Keywords: amino; imino; nickel complexes; phenol ... See more keywords
Revisiting the 2-imino-1,10-phenanthrolylmetal precatalyst in ethylene oligomerization: Benzhydryl-modified cobalt(II) complexes and their dimerization of ethylene
Sign Up to like & getrecommendations! Published in 2021 at "Polyhedron"
DOI: 10.1016/j.poly.2020.114865
Abstract: Abstract The ortho-benzhydryl substituted 2-imino-1,10-phenanthrolylcobalt(II) dichlorides Co1-Co8 have been prepared by the direct reaction of the corresponding compartmental ligands L1–L8 and cobalt(II) chloride with good yields. All the organic compounds (L1–L8) have been fully characterized… read more here.
Keywords: dimerization; imino; cobalt complexes; spectroscopy ... See more keywords
Domino Imino-Aldol-Aza-Michael and Imino-Aldol-Aza-Michael-Imino-Aldol Reactions: Diastereoselective Synthesis of Highly Functionalized 2,6-Disubstituted Piperidines
Sign Up to like & getrecommendations! Published in 2021 at "Tetrahedron"
DOI: 10.1016/j.tet.2021.132285
Abstract: Abstract Enolate mediated domino imino-aldol-aza-Michael and domino imino-aldol-aza-Michael-imino-aldol reactions of α-(aryl/alkyl)methylidene-β-diketones with activated N-aryl aldimines (1.0 and 2.0 equiv., respectively) have been developed for the diastereoselective (de >99%) synthesis of two sets of highly functionalized… read more here.
Keywords: imino aldol; michael imino; imino; aza michael ... See more keywords
Synthesis of α-Amino Cyclobutanones via Formal 1,3-Hydroxy Migration Triggered by Formation of α-Imino Rhodium Carbene.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c01029
Abstract: Formal intramolecular 1,3-OH migration of α-imino carbene was achieved producing a unique zwitterion, and the subsequent selective annulation afforded α-amino cyclobutanone. Features such as readily available substrates, mild reaction conditions, a time-saving procedure, excellent functional… read more here.
Keywords: migration; cyclobutanones via; imino; amino cyclobutanones ... See more keywords
Enantioselective Decarboxylative α-Alkynylation of β-Ketocarbonyls via a Catalytic α-Imino Radical Intermediate.
Sign Up to like & getrecommendations! Published in 2017 at "Organic letters"
DOI: 10.1021/acs.orglett.7b02386
Abstract: A distinctive aminocatalysis via α-imino radical is reported on the basis of SET oxidation of a secondary enamine. The combination of chiral primary amine catalysis and visible-light photoredox catalysis enables the enantioselective decarboxylative coupling of… read more here.
Keywords: imino radical; imino; ketocarbonyls; enantioselective decarboxylative ... See more keywords
Direct α-Imination of N-Acyl Pyrazoles with Nitrosoarenes.
Sign Up to like & getrecommendations! Published in 2019 at "Organic letters"
DOI: 10.1021/acs.orglett.9b01913
Abstract: Unprecedented α-imino N-acyl pyrazoles were efficiently and selectively prepared through the 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD)-catalyzed reaction of nitrosoarenes with N-acyl pyrazoles via an N-nitroso aldol reaction/dehydration sequence. The α-imino acyl pyrazoles were demonstrated to be new versatile… read more here.
Keywords: pyrazoles nitrosoarenes; imination acyl; acyl; imino ... See more keywords
The Elusive Seven-Membered Cyclic Imino Ether Tetrahydrooxazepine.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.8b10918
Abstract: Cyclic imino ether heterocycles are used as ligands in transition metal catalysis, in various drugs and as reactive monomers in living cationic ring-opening polymerization (CROP). While five- and six-membered cyclic imino ethers, i.e. 2-oxazolines and… read more here.
Keywords: cyclic imino; imino; membered cyclic; imino ether ... See more keywords
An Asymmetric Reductase that Intercepts Acyclic Imino Acids Produced In Situ by a Partner Oxidase.
Sign Up to like & getrecommendations! Published in 2019 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.9b03307
Abstract: Acyclic imines are unstable in aqueous conditions. For this reason, known imine reductases, which enable the synthesis of chiral amines, mainly intercept stable cyclic imines. Here we report the detailed biochemical and structural characterization of… read more here.
Keywords: oxidase; partner; reductase; imino ... See more keywords
Iminyl radical-promoted imino sulfonylation, imino cyanogenation and imino thiocyanation of γ,δ-unsaturated oxime esters: synthesis of versatile functionalized pyrrolines
Sign Up to like & getrecommendations! Published in 2019 at "Organic Chemistry Frontiers"
DOI: 10.1039/c9qo00421a
Abstract: We reported an iminyl radical-promoted imino-functionalization of γ,δ-unsaturated oxime esters to synthesize versatile functionalized pyrrolines. read more here.
Keywords: radical promoted; unsaturated oxime; promoted imino; imino ... See more keywords
Regiodivergent synthesis of pyrazino-indolines vs. triazocines via α-imino carbenes addition to imidazolidines†‡
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Science"
DOI: 10.1039/d0sc05725h
Abstract: Hexahydropyrazinoindoles were prepared in a single step from N-sulfonyl triazoles and imidazolidines. Under dirhodium catalysis, α-imino carbenes were generated and formed nitrogen ylide intermediates that, after subsequent aminal opening, afforded the pyrazinoindoles predominantly via formal… read more here.
Keywords: pyrazino indolines; regiodivergent synthesis; imino; synthesis pyrazino ... See more keywords