| 释义 |
Schiff Chem.|ʃɪf|
The name of Hugo Schiff (1834–1915), German chemist, used attrib. and in the possessive to designate things he devised or investigated, as Schiff('s) base, any organic compound having the structure R1R2C{b2}NR3; Schiff('s) reaction, the action of aldehydes of restoring the magenta colour to Schiff's reagent; Schiff('s) reagent, an acid solution of fuchsin (magenta, rosaniline) decolorized by sulphur dioxide or potassium metabisulphite; Schiff('s) test, the Schiff reaction employed as a test for aldehydes.
1892Jrnl. Chem. Soc. LXII. ii. 1189 Schiff's bases, derived from aromatic aldehydes, have a similar constitution to benzylidenaniline, PhN:CHPh, which serves as the type of these compounds. 1915P. E. Spielmann tr. V. von Richter's Org. Chem. 383 Hydrocyanic acid attaches itself similarly to the oximes..and to the Schiff bases. 1951I. L. Finar Org. Chem. I. xiii. 257 Primary amines combine with aromatic aldehydes to form Schiff bases. 1971Nomencl. Org. Chem. (I.U.P.A.C.) (ed. 2) 258 Compounds R1R2C{b2}NR3 have the class name ‘azomethines’. When the nitrogen atom is substituted, this class of compound has the generic name ‘Schiff's bases’. 1975Nature 30 Oct. 823/2 In visual pigments, retinal is bound by way of a Schiff base linkage to the protein.
1894Perkin & Kipping Org. Chem. i. viii. 122 Aldehyde may be detected..by the ‘magenta’ or ‘rosaniline test’ (Schiff's reaction). 1897Chem. News 9 July 23/2 (heading) Schiff reaction applied to acid fuchsine. 1951I. L. Finar Org. Chem. I. viii. 123 Ketones do not give Schiff's reaction.
1897Jrnl. Chem. Soc. LXXII. ii. 468 The author [sc. B. von Bittó] has also studied the behaviour of Schiff's reagent (a 0·025 per cent. solution of magenta decolorised by passing sulphurous anhydride through it)..with a number of aldehydes and ketones. 1929Evers & Elsdon Analysis of Drugs & Chemicals 279 The proportion of formaldehyde may be determined by the use of Schiff's reagent. 1964M. Hynes Med. Bacteriol. (ed. 8) xxvii. 412 Schiff reagent.
1902J. B. Cohen Theoret. Org. Chem. ix. 128 A further reaction for aldehydes is known as Schiff's test. 1949English & Cassidy Princ. Org. Chem. xi. 202 Advantage is taken of the greater reactivity of aldehydes toward bisulfite in the Schiff test for aldehydes. 1972Norman & Waddington Mod. Org. Chem. xii. 174 The addition of an aldehyde to this colourless solution restores the pink colour of the dye (Schiff's test). |
