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Effect of mediator on preparation of highly reactive electrogenerated zinc and its use in cross coupling reaction

Abdul Jalil, Aishah and Sundang, Murni and Triwahyono, Sugeng and Muhd. Muhid, Muhd. Nazlan and Kurono, Nobuhito and Tokuda, Masao (2005) Effect of mediator on preparation of highly reactive electrogenerated zinc and its use in cross coupling reaction. In: International Advanced Technology Congress 2005 (ACTi 05), 6-8 Disember 2005, IOI Marriott Hotel, Putrajaya, Kuala Lumpur. (Submitted)

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Abstract

A new highly reactive zinc metal was readily prepared by electrolysis of a DMF solution containing polyaromatic compounds (PA) such as naphthalene and pyrene as a mediator and a supporting electrolyte in a one- compartment cell fitted with a platinum cathode and a zinc anode. This reactive zinc (EGZn/PA) was used for transformation of organic bromides into the corresponding organozinc bromides, which can not be achieved by the use of either reactive zinc (EGZn) or usual zinc metals. Reaction of the organozinc compounds thus prepared with various aryl iodides in the presence of 5 mol% of palladium catalyst gave the corresponding cross-coupling products in high yields.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:cross coupling, electrogenerated zinc, mediator, polyaromatic compounds, zinc metal
Subjects:T Technology > T Technology (General)
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:5243
Deposited By: Norhani Jusoh
Deposited On:07 Mar 2008 04:37
Last Modified:01 Jun 2010 15:27

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