CHEMISTRY OF AMIDINES .2. SUBSTITUENT AND SOLVENT EFFECTS OF ROTATIONAL BARRIERS IN N'-PYRIDYLFORMAMIDINES

被引：7

作者：

CUNNINGHAM, ID

LLOR, J

MUNOZ, L

机构：

[1] Department of Chemistry, University of Surrey

[2] Departmento de Quimica Fisica, Universidad de Granada, Granada

来源：

JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2 | 1991年 / 11期

关键词：

D O I：

10.1039/p29910001751

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Values of DELTA-G double dagger for rotation about the carbon-dimethylamino bond in a range of substituted pyridyl formamidines have been determined by H-1 NMR spectroscopy in a small range of solvents. The correlation of DELTA-G double dagger with sigma- is interpreted in terms of a coplanar amidine and pyridine system. The variation of DELTA-G double dagger with solvent is interpreted in terms of hydrogen bonding to the amino lone pair of the amidine.

引用

页码：1751 / 1753

页数：3

共 15 条

[1]

BERTELLI DJ, 1967, TETRAHEDRON LETT, P2485

[2] ACID, BASE, AND UNCATALYZED ISOMERIZATION OF Z-AMIDINE TO E-AMIDINE - A MECHANISTIC STUDY [J].