反应详情

278.3 g (1 mole) of 5-(3,4,5-trimethoxy-benzylidene)-hydantoin are dissolved in 2 l of a N sodium hydroxide solution and 40 g of wet Raney-nickel are added. The reaction mixture is worked up according to Example 6. Thus 218.6 g of the desired compound are obtained, yield 78%. Mp.: 180°-181° C.

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