Aromatic sulphonation. Part 53. Kinetics and mechanism of sulphonation of ω-phenylalkane-1-sulphonic acids in sulphuric acid. Comparison of the side-chain SO3H and OSO3H substituent effects

1976 ◽  
pp. 1780-1784 ◽  
Author(s):  
Hans Cerfontain ◽  
Zwaantje R. H. Schaasberg-Nienhuis
Keyword(s):  
Sulphuric Acid ◽  
Substituent Effects ◽  
Kinetics And Mechanism ◽  
Side Chain ◽  
Acid Comparison

Die Weiterleitung von substituenten- induzierten 13C-NMR-chemischen. Verschiebungen in para-substituierten 3-Phenylpropansäure-methylestern / The Transmission of Substituent-Induced 13C NMR Chemical Shifts in para-Substituted 3-Phenyl Propanoic Acid Methyl Esters

1980 ◽  
Vol 35 (7) ◽  
pp. 934-936 ◽  
Author(s):  
R. Radeglia ◽  
S. L. Spassov ◽  
R. Stefanova ◽  
S. D. Sofia
Keyword(s):  
13C Nmr ◽  
Chemical Shifts ◽  
Methyl Esters ◽  
Substituent Effects ◽  
Side Chain ◽  
Parameter Method ◽  
Propanoic Acid ◽  
Nmr Chemical Shifts ◽  
13C Nmr Chemical Shifts ◽  
Acid Methyl

Carbon-13 chemical shifts have been measured of para-substituted 3-phenyl propanoic acid methyl esters. The substituent-induced 13C shifts of the side chain were related to Hammett substituent effects by the dual substituent parameter method. The transmission of substituent effects and the factors that influence 13C shifts are discussed

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