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Sintesis 1-bromopentadekana dari Asam Heksadekanoat; dengan Metode Hunsdiecker yang Dimodifikasikan

Harun Halim


Abstract.

Haloalkane can b e prepared by defferent methods. The preparation of 1-haloalkane, specially the long chained one, faces difficulties, through carbonium reaction as well as through radical reaction. This is because primary carbonium ions as well as primary radical intermediates are both less stable than the secondary and tertiary one. Using the Hunsdiecker method the preparation is still possible because among the reactions steps the following reaction occurs which practically goes to completion. Cristol and Firth modified this method by using mercurieoxide instead of silveroxjde. In this experiment mercurioxide is also used. The reaction is followed by observing CO2 bubbles in the bubbler. When there are no bubbles formed in the bubbler the reaction is assumed to be complete. The yield is only 27%. In this paper is discussed the competing reactions steps which determine the final yield.



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