Acyl nitroxides. Part 4. Estimation of OH bond dissociation energies for N-t-butylhydroxamic acids
作者:Terence C. Jenkins、M. John Perkins
DOI:10.1039/p29830000717
日期:——
constants for the hydrogen exchange reactions between N-t-butylhydroxamic acids and the stable piperidine N-oxyl (1); since the O–H bond strength in (1)-H is known, this gives an estimate of the O–H bond strengths in the hydroxamic acids. These are found to be stronger than those in dialkyl nitroxide and increase with increasing electron demand in the acyl group.
Esr光谱已用于确定N-叔丁基异羟肟酸与稳定的哌啶N-氧基之间的氢交换反应的平衡常数(1); 由于已知(1)-H中的O-H键强度,因此可以估算出异羟肟酸中的O-H键强度。发现它们比二烷基硝基氧中的那些强,并且随着酰基中电子需求的增加而增加。