Diamines, from addition diketones

Lindsley and coworkers prepared functionalized quinoxalines and heterocyclic pyrazines in excellent yields from 1,2-diketone intermediates under the action of microwave irradiation (Scheme 10.50) [104]. In addition to being a general method for synthesis of a variety of aryl/heteroaryl 1,2-diamines and 1,2-diketones, this procedure suppresses the formation of the polymeric species characteristic of traditional thermal conditions. 

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