英语词汇“diazo derivatives”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

1. A formative used in chemical nomenclature to denote the substituent =N+=N− (as in diazomethane, CH₂N₂) and also the group NN when one bond only is to a carbon atom of an organic group (as in benzenediazochloride, C₆H₅—N=N—Cl). Also used attributively, as in diazo compounds, diazo derivatives, diazo reaction. †Formerly also used in naming compounds in which the group NN has both bonds attached to carbon atoms in organic groups (now replaced by azo-) and compounds containing the diazonium group, —N₂⁺. (Diazo compound is also used loosely to denote azo and diazonium compounds as well as true diazo compounds.)

ΚΠ

1859 P. Griess in Proc. Royal Soc. 9 595 The new body, for which I propose the provisional name diazodinitrophenol, is soluble in alcohol and ether.

1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 797 Whereby they were converted into diazotoluenes.

1880 Friswell in Jrnl. Soc. Arts 446 The diazobenzene formed at once attacks the free aniline salt.

1880 Athenæum 13 Nov. 645/2 Action of Diazonaphthalin on Salicylic Acid.

1885 Law Rep.: Chancery Div. 29 367 Naphthylamine is converted into its diazo compound by the action of nitrous acid.

1890 Lancet 23 Aug. 413/1 The so-called diazo reaction of urine..A bright or carmine red colouration denotes the diazo action.

1908 J. C. Cain Chem. Diazo-compounds xviii. 133 Hantzsch..adopted Blomstrand's formula for the diazo-salts. He preferred also to call these ‘diazonium’ salts.

1940 S. Miall New Dict. Chem. 169/1 The diazonium salts are by far the most important diazo-compounds.

1951 I. L. Finar Org. Chem. xxiv. 489 Diazo-compounds have the structure ArNNY... Azo-compounds, on the other hand, have the structure ArNNAr.

1951 C. R. Noller Chem. Org. Compounds xiii. 258 Compounds containing the characteristic group >CN₂ are known as aliphatic diazo compounds.

1959 Chambers's Encycl. IV. 690/1 Azo dye synthesis depends on two reactions discovered by Griess (1858): first, diazo compound formation..; secondly, adding this diazo component to an aromatic amino or hydroxy compound, called the coupling component.

1965 Nomencl. Org. Chem. (I.U.P.A.C.) C. 217 Compounds RNNX are named by adding, after the name of the parent compound RH, the syllables ‘diazo’ joined to the designation of the atom or group X.

单词	diazo derivatives
释义	> as lemmas diazo derivatives 1. A formative used in chemical nomenclature to denote the substituent =N+=N− (as in diazomethane, CH₂N₂) and also the group NN when one bond only is to a carbon atom of an organic group (as in benzenediazochloride, C₆H₅—N=N—Cl). Also used attributively, as in diazo compounds, diazo derivatives, diazo reaction. †Formerly also used in naming compounds in which the group NN has both bonds attached to carbon atoms in organic groups (now replaced by azo-) and compounds containing the diazonium group, —N₂⁺. (Diazo compound is also used loosely to denote azo and diazonium compounds as well as true diazo compounds.) ΚΠ 1859 P. Griess in Proc. Royal Soc. 9 595 The new body, for which I propose the provisional name diazodinitrophenol, is soluble in alcohol and ether. 1873 H. Watts Fownes's Man. Elem. Chem. (ed. 11) 797 Whereby they were converted into diazotoluenes. 1880 Friswell in Jrnl. Soc. Arts 446 The diazobenzene formed at once attacks the free aniline salt. 1880 Athenæum 13 Nov. 645/2 Action of Diazonaphthalin on Salicylic Acid. 1885 Law Rep.: Chancery Div. 29 367 Naphthylamine is converted into its diazo compound by the action of nitrous acid. 1890 Lancet 23 Aug. 413/1 The so-called diazo reaction of urine..A bright or carmine red colouration denotes the diazo action. 1908 J. C. Cain Chem. Diazo-compounds xviii. 133 Hantzsch..adopted Blomstrand's formula for the diazo-salts. He preferred also to call these ‘diazonium’ salts. 1940 S. Miall New Dict. Chem. 169/1 The diazonium salts are by far the most important diazo-compounds. 1951 I. L. Finar Org. Chem. xxiv. 489 Diazo-compounds have the structure ArNNY... Azo-compounds, on the other hand, have the structure ArNNAr. 1951 C. R. Noller Chem. Org. Compounds xiii. 258 Compounds containing the characteristic group >CN₂ are known as aliphatic diazo compounds. 1959 Chambers's Encycl. IV. 690/1 Azo dye synthesis depends on two reactions discovered by Griess (1858): first, diazo compound formation..; secondly, adding this diazo component to an aromatic amino or hydroxy compound, called the coupling component. 1965 Nomencl. Org. Chem. (I.U.P.A.C.) C. 217 Compounds RNNX are named by adding, after the name of the parent compound RH, the syllables ‘diazo’ joined to the designation of the atom or group X. extracted from diazo-comb. form < as lemmas
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