73377-38-5Relevant academic research and scientific papers
Radical C?N Borylation of Aromatic Amines Enabled by a Pyrylium Reagent
Chabbra, Sonia,Cornella, Josep,Leutzsch, Markus,Ma, Yuanhong,Niski, Jan,Pang, Yue,Reijerse, Edward J.,Schnegg, Alexander
supporting information, (2020/03/23)
Herein, we report a radical borylation of aromatic amines through a homolytic C(sp2)?N bond cleavage. This method capitalizes on a simple and mild activation via a pyrylium reagent (ScPyry-OTf) thus priming the amino group for reacti
Reactions of N-Substituted Pyridinium Cations with Carbanions: 5,6,8,9-Tetrahydro-7-phenylbisbenzoacridine, a Superior Leaving Group
Katritzky, Alan R.,Thind, Sukhpal S.
, p. 661 - 663 (2007/10/02)
N-Substituents are transferred from pyridinium cations to malonate, cyanoacetate , and acetoacetate carbanions: for alkyl substituents the pentacyclic derivatives (4) attain the required activity.
The Preparation of 2,4,6-Triphenylpyrylium Trifluoromethanesulphonate, Fluorosulphonate, Ethoxysulphonate, Naphthalene-2-sulphonate, Stannochloride, Trichloroacetate, and Trifluoroacetate and other Pyrylium Trifluoromethanesulphonates and their Reactions
Katritzky, Alan R.,El-Mowafy, Azzahra M.,Marzorati, Liliana,Patel, Ranjan C.,Thind, Sukhpal S.
, p. 4001 - 4030 (2007/10/02)
The title pyrylium salts are all readily prepared in high yield from 1,3,5-triphenylpent-2-ene-1,5-dione.Amines react with the trifluoromethanesulphonate, naphthalene-2-sulphonate, and trifluoroacetate to give the corresponding pyridinium salts in high yi
NUCLEOPHILIC DISPLACEMENT OF N-BENZYL GROUPS: EFFECT OF PYRIDINIUM ON RATES AND MECHANISM
Katritzky, Alan R.,Musumarra, Giuseppe,Sakizadeh, Kumars
, p. 2701 - 2703 (2007/10/02)
Steric acceleration by α-substituents in pyridine leaving groups is quantitatively assessed.Constraint of α-phenyls to near planarity forms superior leaving groups for SN2 displacements. α-t-Butyl groups significantly increase SN1 dissociation.
