Conjugate Addition of 3‐Aryl Oxindoles to in situ generated o‐ Quinone Methides Without Essential Electronic or Steric Groups
Sign Up to like & getrecommendations! Published in 2024 at "Asian Journal of Organic Chemistry"
DOI: 10.1002/ajoc.202400370
Abstract: Herein an efficient method for in situ generated o‐quinone methides without essential electronic or steric groups at the exocyclic methylene or on six‐membered ring was established. The method relies on acetylation of salicylylols and subsequently base promoted 1,4‐elimination. The in situ generated o‐quinone methides could… read more here.
Keywords: situ generated; generated quinone; quinone methides; without essential ... See more keywords
Base‐Catalyzed Decarboxylative Amination of In‐situ Generated ortho‐Quinone Methides: Synthesis of Benzyl Amines
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DOI: 10.1002/ajoc.202400380
Abstract: In this paper, a direct access to benzylic amines from in‐situ generated ortho‐quinone methides (o‐QMs) and isocya‐nate/isothiocyanate via decarboxylation is described. This base‐catalyzed methodology has high functional group tolerance and shows a wide range of… read more here.
Keywords: situ generated; ortho quinone; quinone methides; base catalyzed ... See more keywords
Synthesis, Crystal Structure, and Catalytic Property of a Copper Coordination Compound Based on In Situ Generated 2-Hydroxynicotinic Acid
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Chemical Crystallography"
DOI: 10.1007/s10870-019-00818-0
Abstract: Abstract The copper coordination complex [CuCl(2-OHNA)H 2 O]·H 2 O ( 1 ) was synthesized by the reaction of CuCl 2 ·2H 2 O with in situ generated 2-hydroxynicotinic acid and its crystal structure was… read more here.
Keywords: generated hydroxynicotinic; copper coordination; situ generated; catalytic property ... See more keywords
Unique behavior of in-situ generated nanosilica particles on physico-mechanical properties of fluoroelastomer
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Polymer Research"
DOI: 10.1007/s10965-018-1629-9
Abstract: Fluoroelastomer (FKM) rubber containing different weight percentage of in-situ generated nanosilica particles have been prepared by sol-gel method using tetraethoxysilane (TEOS) as precursor and n-butyl amine as catalyst. FKM rubber with precipitated silica particles have… read more here.
Keywords: fkm rubber; nanosilica particles; generated nanosilica; situ generated ... See more keywords
Removal of groundwater nitrates by heterogeneous supramolecular complexes-like photocatalytic system based on in-situ generated and highly active Ti3+/Ti2+ states in the reduced TiO2
Sign Up to like & getrecommendations! Published in 2019 at "Molecular Catalysis"
DOI: 10.1016/j.mcat.2019.03.028
Abstract: Abstract In this investigation, a novel catalytic nitrate reduction method by using the in-situ generated Ti3+/Ti2+ states in the TiO2/Al catalyst was demonstrated. The Ti3+/Ti2+ states in TiO2/Al catalyst harvest the UV to near IR… read more here.
Keywords: system; ti2 states; removal; ti3 ti2 ... See more keywords
CuI-catalyzed thioarylation of active methylene compounds with in situ generated benzenethiols: Preparation of α-thioaryl-β-dicarbonyls and 4-thioaryl-5-pyrazolones
Sign Up to like & getrecommendations! Published in 2018 at "Tetrahedron"
DOI: 10.1016/j.tet.2018.07.049
Abstract: Abstract In this paper, a one-step copper-catalyzed procedure for oxidative coupling of active methylene compounds including cyclic β-diketones, cyclic β-ketoesters and 5-pyrazolone with benzenethiols is described. Benzenethiols are in situ generated in the reaction mixture… read more here.
Keywords: cui catalyzed; situ generated; thioaryl; active methylene ... See more keywords
Three-Dimensional Interpenetrating Frameworks Based on {P4Mo6} Tetrameric Clusters and Filled with In Situ Generated Alkyl Viologens.
Sign Up to like & getrecommendations! Published in 2020 at "Inorganic chemistry"
DOI: 10.1021/acs.inorgchem.0c02253
Abstract: Four novel three-dimensional interpenetrating frameworks based on {P4Mo6} units, H[C12H14N2]4[TM4(PO4)(H2O)4Na6][TM2(Mo6O12(HPO4)3(PO4)(OH)3)4]·8H2O (1, 2) and H[C14H18N2]4[TM4(PO4)(H2O)4Na6][TM2(Mo6O12(HPO4)3(PO4)(OH)3)4]·8H2O (3, 4) (TM = Co2+ (1, 3), Mn2+ (2, 4)) were synthesized and characterized using infrared spectroscopy, elemental analyses, thermogravimetric analysis,… read more here.
Keywords: three dimensional; dimensional interpenetrating; based p4mo6; situ generated ... See more keywords
gem-Halofluorocyclopropanes via [2 + 1] Cycloadditions of In Situ Generated CFX Carbene with Alkenes.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c02126
Abstract: An efficient and operationally simple synthesis of gem-bromofluorocyclopropanes under mild conditions has been developed. The method employs ethyl dibromofluoroacetate (EDBFA) as an accessible and inexpensive source of the bromofluorocarbene (:CFBr) intermediate. The protocol provides the… read more here.
Keywords: halofluorocyclopropanes via; via cycloadditions; situ generated; generated cfx ... See more keywords
Enantioselective 1,6-Addition of β-Ketoester Enolates to In Situ Generated para-Quinone Methides Enabled by Cooperative Palladium and Brønsted Acid Catalysis.
Sign Up to like & getrecommendations! Published in 2023 at "Organic letters"
DOI: 10.1021/acs.orglett.2c04127
Abstract: We report herein an asymmetric cooperative process for the enantioselective 1,6-addition of β-ketoesters to in situ generated para-quinone methides with chiral Pd-aqua complexes as mixed Brønsted acid-base catalysts. Excellent yields, outstanding enantiocontrol, and good diastereoselectivity… read more here.
Keywords: situ generated; generated para; para quinone; quinone methides ... See more keywords
Iron-Catalyzed Multicomponent C-H Alkylation of in Situ Generated Imines via Photoinduced Ligand-to-Metal Charge Transfer.
Sign Up to like & getrecommendations! Published in 2024 at "Organic letters"
DOI: 10.1021/acs.orglett.4c01986
Abstract: Herein, we describe a novel photoinduced iron-catalyzed strategy for multicomponent C-H alkylation of in situ generated imines. By utilizing the alkyl radicals generated through iron-mediated photocatalytic C-H activation, the imines formed in situ are further… read more here.
Keywords: generated imines; situ generated; multicomponent alkylation; alkylation situ ... See more keywords
Copper-Catalyzed Alkynylation of In Situ-Generated Azoalkenes: An Umpolung Approach to Pyrazoles.
Sign Up to like & getrecommendations! Published in 2024 at "Organic letters"
DOI: 10.1021/acs.orglett.4c02471
Abstract: A straightforward umpolung approach to regioselectively N-protected polysubstituted pyrazoles starting from aromatic α-halohydrazones and terminal alkynes has been developed. In this process, azoalkenes generated in situ from α-halohydrazones are involved in the Cu(I)-catalyzed Michael addition… read more here.
Keywords: alkynylation situ; umpolung approach; situ generated; catalyzed alkynylation ... See more keywords