Synthesis and Characterisation of Extended p-Bonding Systems in Cycloimmonium Ylides Derived from the 4,4’-Bipyridine
摘要:
Disubstituted cycloimmonium ylides derived from the 4,4'-bipyridine with one, two or four ylidic systems in their molecular structure are described as stable compounds. Synthesis of some bridged 1,1'-disubstituted 4,4'-bipyridinium dimethylides in which 1,4- or 1,3-phenylene spacers may be used, provide some new macromolecular cycloimmonium ylides with spatially extended pi-bonding system. These compounds were obtained by the chemical conversion of 4,4'-bipyridinium salts as viologens or bis-viologens, with acylating or carbamoylating agents, in basic media. The characterisation of all compounds has been mainly performed by H-1 and C-13 NMR spectroscopy.
Synthesis and Characterisation of Extended p-Bonding Systems in Cycloimmonium Ylides Derived from the 4,4’-Bipyridine
摘要:
Disubstituted cycloimmonium ylides derived from the 4,4'-bipyridine with one, two or four ylidic systems in their molecular structure are described as stable compounds. Synthesis of some bridged 1,1'-disubstituted 4,4'-bipyridinium dimethylides in which 1,4- or 1,3-phenylene spacers may be used, provide some new macromolecular cycloimmonium ylides with spatially extended pi-bonding system. These compounds were obtained by the chemical conversion of 4,4'-bipyridinium salts as viologens or bis-viologens, with acylating or carbamoylating agents, in basic media. The characterisation of all compounds has been mainly performed by H-1 and C-13 NMR spectroscopy.
�ber Derivate des p-Phenylen-?, ??-di�thylalkohols, des m-und p-Diacetyl-benzols und der p-Phenylen-diacryls�ure. (49. Mitteilung �ber Stickstoff-Heterocyclen)
作者:Paul Ruggli、Wilhelm Theilheimer
DOI:10.1002/hlca.194102401108
日期:——
Kroehnke; Vogt, Chemische Berichte, 1953, vol. 86, p. 1132,1137