| 释义 |
propylidene Chem.|prəʊˈpɪl-, prəʊˈpaɪlɪdiːn|
[ad. F. propylidène (E. Reboul 1876, in Compt. Rend. LXXXII. 30): see propyl and -idene.]
The bivalent radical CH3CH2CH{b2}; usu. attrib., esp. in names of derivatives of this.
1876Jrnl. Chem. Soc. XXIX. i. 894 Propionic aldehyde is treated with phosphoric chloride, and forms a propylidene dichloride homolog[o]us with ethylidene dichloride; its formula is CH3{b1}CH2{b1}CHCl2, and it boils at 85°–87°. 1903A. J. Walker tr. Holleman's Text-Bk. Org. Chem. i. 146 Propylene chloride, C3H6Cl2,..is not identical with the reaction-product obtained by treating acetone with phosphorus pentachloride..nor with that from propionaldehyde, CH3·CH2·CHCl2 (propylidene chloride). 1951I. L. Finar Org. Chem. I. iv. 49 General methods of preparation of the olefins... By the action of zinc dust on methanolic solutions of gem-dihalogen derivatives of the paraffins.., e.g., propylene from propylidene bromide. 1976Chem. Physics Lett. XXXVII. 220/2 The barrier to conversion of propylidene to propylene is greater than in C2H4. |