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US4182882A Process for the production of pyranthrones or flavanthrones 失效
吡喃酮或黄酮酮的生产方法

Process for the production of pyranthrones or flavanthrones
摘要:
A process for the production of pyranthrones or flavanthrones which comprises reacting substituted or unsubstituted 2,2'-dialkyl-1,1'-dianthraquinonyls or 2,2'-diacylamino-1,1'-dianthraquinonyls respectively in a two-phase system of aqueous organic solvents using quaternary ammonium or phosphonium compounds as catalysts.
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