Ullmann Condensation - Goldberg Reaction

Goldberg Reaction

An example of a Goldberg reaction is the synthesis of fenamic acid, an intermediate of acridone via the Goldberg reaction:

An Ullmann-type aromatic amination reaction between an aryl iodide and an aryl amine as coupling partners has been published. The catalyst used is formed from copper(I) iodide and phenanthroline. As this reaction proceeds well with an electron-rich aryl iodide it is a valuable alternative to the Buchwald-Hartwig amination reaction, which gives best yields with electron-poor aryl halides.

The scope is extended to amides for example in the synthesis of this Camps cyclization precursor :

Read more about this topic:  Ullmann Condensation

Famous quotes containing the words goldberg and/or reaction:

    Diplomacy is to do and say
    The nastiest things in the nicest way.
    —Isaac Goldberg (1887–1938)

    In a land which is fully settled, most men must accept their local environment or try to change it by political means; only the exceptionally gifted or adventurous can leave to seek his fortune elsewhere. In America, on the other hand, to move on and make a fresh start somewhere else is still the normal reaction to dissatisfaction and failure.
    —W.H. (Wystan Hugh)