Characteristics of the reactivity of thyronine, tyrosine and some iodinated derivatives of these substances in the presence of the ferric ferricyanide-arsenious acid reagent

1969 ◽  
Vol 42 ◽  
pp. 524-531
Author(s):  
Eduardo Zappi
Keyword(s):  
Arsenious Acid ◽  
Acid Reagent ◽  
Derivatives Of

Widening the scope of the corrole sulfonation

2015 ◽  
Vol 19 (06) ◽  
pp. 735-744 ◽  
Author(s):  
Mario Luigi Naitana ◽  
Sara Nardis ◽  
Sara Lentini ◽  
Daniel O. Cicero ◽  
Roberto Paolesse
Keyword(s):  
Main Product ◽  
Chlorosulfonic Acid ◽  
Reagent Ratio ◽  
Potential Applications ◽  
Acid Reagent ◽  
Disubstituted Product ◽  
Derivatives Of

The sulfonation reaction has been particularly useful to prepare amphiphilic derivatives of 5,10,15-tris(pentafluorophenyl)corrole, but it has been limited to this corrole. We have studied the scope of this reaction, using 5,10,15-triphenylcorrole as the prototypical example of corrole structure. The reaction protocol has been modified to avoid the corrole aggregation, which limited its reactivity in the neat chlorosulfonic acid. Surprisingly, the reaction shows an unprecedented regioselectivity for corrole derivatives, affording 3 as the main product, but also corrole 5, which is the first example of monosubstituted corrole on pyrrole B. By modulating the corrole:chlorosulfonic acid reagent ratio, it has been possible to obtain the antipodal disubstituted product 6, demonstrating again a not usual regioselectivity for corrole substitution. These results allow the preparation of novel amphiphilic corrole derivatives, which open up their potential applications in different fields.

Physical Properties of TCNQ Salts with N-Methyl Derivatives of Pyridine

1982 ◽  
Vol 85 (1) ◽  
pp. 257-263 ◽  
Author(s):  
A. Graja ◽  
M. Przybylski ◽  
B. Butka ◽  
R. Swietlik
Keyword(s):  
Physical Properties ◽  
Methyl Derivatives ◽  
Derivatives Of

Diorganyl Derivatives of Tellurium(IV) (σ-Telluranes of R 2 TeX 2 Type)

2002 ◽  
Vol 23 (2) ◽  
pp. 125-207 ◽  
Author(s):  
Igor D. Sadekov ◽  
Alexander V. Zakharov ◽  
Alexander A. Maksimenko
Keyword(s):  
Derivatives Of

Hindered rotation around the amide bond in a series of derivatives of 2-acetamidothiophenes

1991 ◽  
Vol 88 ◽  
pp. 689-707 ◽  
Author(s):  
P Andriamadio ◽  
D Nicole ◽  
A Cartier ◽  
M Wierzbicki ◽  
G Kirsch
Keyword(s):  
Amide Bond ◽  
Hindered Rotation ◽  
Derivatives Of
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