| 单词 | pyrroline |
| 释义 | pyrroline Chem.|ˈpɪrəliːn|
[f. pyrrole + -ine5, as an alkaloid.]
†a. = pyrrole. Obs.
1881Watts Dict. Chem. VIII. ii. 1728 Pyrroline (commonly called Pyrrol), C4H5N = NH:CH·CH:CH·CH. Ibid. 1729 Pyrroline..is a perfectly colourless, highly dispersive liquid, which, when quite pure, remains colourless for several days. 1895Muir & Morley ibid. IV. 366/2.
b. Formerly also -in. A partially reduced derivative of pyrrole having the formula C4H7N, of which three isomers are possible; esp. HN·CH2·CH:CH·CH2 (3-pyrroline), a colourless, basic liquid obtained by reduction of pyrrole with nascent hydrogen; also a substituted derivative of any of these compounds. [Named in Ger. as pyrrolin (Ciamician & Dennstedt 1883, in Ber. d. Deut. Chem. Ges. XVI. 1539).]
1884Roscoe & Schorlemmer Treat. Chem. III. ii. 610 Pyrrol unites with nascent hydrogen, forming pyrrolin, C4H6(NH), an oily liquid that boils at 90°–91°, and acts as a strong base. 1902[see pyrrole a]. 1926H. G. Rule tr. J. Schmidt's Text-bk. Org. Chem. 517 Dihydro-pyrroles are known as pyrrolines, and the completely reduced tetrahydro-pyrroles as pyrrolidines. 1961G. M. Badger Chem. Heterocyclic Compounds ii. 17, 3-Pyrrolines have been isomerized to the corresponding 1-pyrrolines by heating with Raney nickel. Ibid. 18, 2-Pyrrolines have been poorly characterized. 1972J. M. Tedder et al. Basic Org. Chem. IV. ix. 463 Another group of tetrapyrrolic macrocyclic compounds found in nature are the corrins which are made up of four partially reduced pyrrole (pyrroline and pyrrolidine) rings. |
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