Propyl group
The propyl group is an atomic arrangement in organic chemistry with the empirical formula C 3 H 7 . It can be conceptually derived from the abstraction of a hydrogen atom from propane and occurs in two isomeric forms. If the hydrogen atom is abstracted from one of the two terminal, primary carbon atoms of propane, the n -propyl group is obtained , whereas the abstraction from the middle, secondary carbon atom results in an isopropyl group ( i -propyl group). The propyl group lies in the homologous series of alkyl radicals between the ethyl group (C 2 H 5 ) and the butyl group (C 4 H 9 ).
An important compound that contains an isopropyl group is isopropylbenzene (cumene), the starting material for the industrial production of phenol .
Cyclopropyl group
The cyclopropyl group is derived in an analogous manner from the smallest representative of the cycloalkanes , cyclopropane , and has the empirical formula C 3 H 5 . Due to the different molecular formula, it is neither an isomer of the n- propyl group nor of the isopropyl group.
Individual evidence
- ^ Siegfried Hauptmann : Organic Chemistry , 2nd edition. VEB Deutscher Verlag für Grundstofftindustrie, Leipzig 1985, ISBN 3-342-00280-8 , pp. 334-335