Electronic effect of substituents on anilines favors 1,4-addition totrans-β-nitrostyrenes: access toN-substituted 3-arylindoles and 3-arylindoles

2018 ◽  
Vol 16 (20) ◽  
pp. 3760-3770 ◽  
Author(s):  
Radhakrishna Gattu ◽  
Suchandra Bhattacharjee ◽  
Karuna Mahato ◽  
Abu T. Khan
Keyword(s):  
Efficient Method ◽  
Electronic Effect ◽  
Regioselective Synthesis ◽  
Substituted Anilines ◽  
Alkyl Aryl ◽  
Effect Of Substituents

A simple and an efficient method for the regioselective synthesis ofN-alkyl/aryl/H 3-arylindole derivatives fromN-substituted anilines andtrans-β-nitrostyrenes has been described using 10 mol% of bismuth(iii) triflate as a catalyst in acetonitrile at 80 °C.

The effects controlling the oxygen basicity in alkoxysilanes (RO)nSi(CH3)4-n. The mutual polarizability effect of alkoxy groups attached to silicon

1979 ◽  
Vol 44 (3) ◽  
pp. 750-755 ◽  
Author(s):  
Josef Pola ◽  
Marie Jakoubková ◽  
Václav Chvalovský
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Electronic Effect ◽  
Linear Regression Analysis ◽  
Effect Of Substituents ◽  
Relative Basicity ◽  
Polarizability Effect ◽  
Alkoxy Groups ◽  
Individual Series

Relative basicity of the oxygen in alkoxysilanes (RO)nSi(CH3)3-n having n = 1-4 and various electrondonating and electronwithdrawing groups R measured as Δν(OH) of phenol due to its interaction with these compounds in CCl4 is shown to be chiefly controlled by the electronic effect of substituents R. Linear regression analysis of the Δν(OH) vs n relatioship for individual series (RO)nSi(CH3)4-n suggests the operation of the polarizability effect of RO groups becoming more important with increasing electronwithdrawing nature of R.

ChemInform Abstract: An Efficient and Regioselective Synthesis of 1,1′-Oxalylbis [3-(alkyl/aryl/heteroaryl)-5-(trihalomethyl)-1H-pyrazoles] (III) from 4-Alkoxy-1,1,1-trihaloalk-3-en-2-ones.

ChemInform ◽  
2011 ◽  
Vol 42 (29) ◽  
pp. no-no
Author(s):  
Helio G. Bonacorso ◽  
Cleber A. Cechinel ◽  
Jussara Navarini ◽  
Rosalia Andrighetto ◽  
Marcos A. P. Martins ◽  
...  
Keyword(s):  
Regioselective Synthesis ◽  
Alkyl Aryl

ChemInform Abstract: A Simple and Efficient Method for the Preparation of Hindered Alkyl-Aryl Ethers.

ChemInform ◽  
2010 ◽  
Vol 30 (24) ◽  
pp. no-no
Author(s):  
Thomas F. Woiwode ◽  
Christoph Rose ◽  
Thomas J. Wandless
Keyword(s):  
Efficient Method ◽  
Alkyl Aryl ◽  
Aryl Ethers ◽  
Alkyl Aryl Ethers

Structure of aminonitrones and electronic effect of substituents on their acid-base properties

2016 ◽  
Vol 86 (4) ◽  
pp. 806-809 ◽  
Author(s):  
M. V. Il’in ◽  
D. S. Bolotin ◽  
M. Ya. Demakova ◽  
M. S. Avdontseva
Keyword(s):  
Electronic Effect ◽  
Acid Base ◽  
Effect Of Substituents ◽  
Base Properties
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