| 单词 |
hydroxamic |
| 释义 |
hydroxamic, a. Chem.|haɪdrɒkˈsæmɪk|
[tr. G. hydroxamsäure hydroxamic acid (H. Lossen 1869, in Ann. d. Chem. u. Pharm. CL. 315), f. hydrox(ylamin hydroxylamine + am(id amide: see -ic.]
hydroxamic acid: any of the acyl derivatives, R·CO· NHOH or (R·CO)2NHOH, of hydroxylamine (see quot. 1966).
1875Jrnl. Chem. Soc. XXVIII. 751 (heading) Distillation of hydroxamic acids. Ibid. 766 The ethers of aromatic hydroxamic acids. 1926Biochem. Jrnl. XX. 1362 The hydroxy-acids present in rape oil give hydroxamic acids whose sodium salts are soluble in alcohol. 1966Millar & Springall Sidgwick's Org. Chem. Nitrogen (ed. 3) ix. 333 The mono N-acyl derivatives of hydroxylamine are usually referred to as hydroxamic acids, a name which strictly refers to structure (I). They can clearly have the alternative structure (II) which should be called a hydroximic acid. In no case are the two isomers known as separate compounds: (I) R·C{b2}O{bbc1}NHOH (II) R·COH{bbc2}NOH and a compound of this class..can react as if it had either structure. Commonly the term hydroxamic is used to imply either of these structures. |
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