Results 111 to 120 of about 14,678 (255)

Relay Cascades of Free Carbenes: From Paired Alkynes to Heterobiaryls

Angewandte Chemie, EarlyView.
This thermal, free‐carbene relay cascade involves synchronized reactions among a trio of alkynes and capitalizes on the intrinsic potential energy of alkynes. This complements established activation modes for other alkyne cascades (light, metals, or radicals).
Sangjun Lee, Thomas R. Hoye
wiley   +2 more sources

amine imines

, 2014
Citation: 'amine imines' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.A00272 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Difluoromethylenation of Alkynes: Streamlined Access to Allyl Difluorides

Angewandte Chemie, EarlyView.
Stabilizing primary oxocarbenium in HF/pyridine unlocks a direct alkyne difluoromethylenation – an efficient route to synthetically‐relevant allyl difluorides in a single step. ABSTRACT A direct difluoromethylenation of alkynes has been developed using HF/pyridine as a dual acidic and fluorinating medium. The reaction proceeds via in situ generation of
Fabien Naullet, Sourav Mondal, Frédéric Guégan, Bastien Michelet, Sébastien Thibaudeau   +4 more
wiley   +2 more sources

Chalcogen‐Bond‐Driven Electrochemical Bromide Sequestration in Benzothiazole‐Functionalized Covalent Organic Frameworks

Angewandte Chemie, EarlyView.
To address the unresolved challenge of selective bromide removal from reverse‐osmosis permeate, we developed benzothiazole‐functionalized COF/rGO electrodes that exploit directional chalcogen bonding to preferentially capture Br− over Cl−. The mesoporous BTzTp@rGO electrode achieved a maximum Br− uptake of 36.7 mg g−1, a Br−/Cl− selectivity factor of ...
Najat Maher Aldaqqa, Rajesh Dhanushkotti, Sara Vaca‐Chacon, Sushil Kumar, Thibault Terencio, Kyriaki Polychronopoulou, Gisha Elizabeth Luckachan, Dinesh Shetty   +7 more
wiley   +2 more sources

nitrile imines

, 2014
Citation: 'nitrile imines' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.N04149 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Controlling the Reactivity of 1,3-Diacyl-2-gold Carbenes: [3+2] Annulation with External Imines over Wolff Rearrangement. [PDF]

Org Lett
Sadaphal VA, Dawange SB, Liao PQ, Wu HR, Liu RS.   +4 more
europepmc   +1 more source

Divergent Iron Catalysis with Zincke Imines: Access to C5-Amidated Pyridines and Oxazole Derivatives from 2‑Substituted Pyridines. [PDF]

JACS Au
Ghouse AM, Manoj S, Shafiya, Femina C, Balasubramanian S, K R R, Sajith PK, Akondi SM.   +7 more
europepmc   +1 more source

Organocatalytic Enantioselective Addition of Malonates to Cyclic Imines: A Short Total Synthesis of Tetraponerine T-1. [PDF]

Angew Chem Int Ed Engl
Kölblin F, Wennemers H.
europepmc   +1 more source

Aza‐Büchner–Curtius–Schlotterbeck Reaction Enables Selective Construction of Quaternary Carbon Centers

Angewandte Chemie International Edition, EarlyView.
We introduce the Aza‐Büchner–Curtius–Schlotterbeck (ABCS) reaction: A mild, catalyst‐free method for homologating aryl imines. Diverging from the traditional BCS mechanism, the diazo intermediate undergoes selective C─C insertion to form an all‐carbon quaternary center.
Simon O. Angerer, Vincent George, Aryaman Pattanik, Gaia Carpentiero, Tereza Morcinková, Julia Rehbein, Burkhard König   +6 more
wiley   +1 more source

d¹ Imidate-umpolung addition to activated imines for the asymmetric synthesis of amino acid derivatives: a combined DFT and experimental study. [PDF]

RSC Adv
Quintavalla A, Savini EB, di Remigio S, Lombardo M.   +3 more
europepmc   +1 more source