scholarly journals C-Alkylation of Active Methylene Compounds by Means of Alcohols.III.A New Synthesis of 1, 2-Dipyridylethylene and Related Compounds

1967 ◽  
Vol 15 (4) ◽  
pp. 511-514 ◽  
Author(s):  
Seiji Miyano ◽  
Nobuhiro Abe
Keyword(s):  
New Synthesis ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Related Compounds

Carbon Disulfide. III. Reaction with Active Methylene Compounds. The Infrared and Ultraviolet Spectra of the Desaurins

1971 ◽  
Vol 49 (9) ◽  
pp. 1467-1476 ◽  
Author(s):  
Peter Yates ◽  
Thomas R. Lynch ◽  
Donald R. Moore
Keyword(s):  
Carbon Disulfide ◽  
Strong Interaction ◽  
Fermi Resonance ◽  
Carbonyl Groups ◽  
Ultraviolet Spectra ◽  
Weak Intensity ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Related Compounds

The position of the carbonyl-stretching bands in the i.r. spectra of the desaurins, 2,4-bis(acylmethylene)- and 2,4-bis(carboxymethylene)-1,3-dithetane derivatives, establishes that there is a strong interaction between the sulfur atoms and the carbonyl groups. This is considered to involve mainly conjugative interaction rather than interaction through space, although the latter may account for the abnormally weak intensity of the carbonyl-stretching bands. These bands are split in the case of several desaurins and related compounds, and evidence has been obtained in one case that the splitting is due to Fermi resonance. The u.v. spectra of the desaurins and related compounds also indicate a strong conjugative interaction between the sulfur atoms and the carbonyl groups.

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