申请人:Toyo Gosei Kogyo Co., Ltd.
公开号:EP1044964A2
公开(公告)日:2000-10-18
An effective method for producing 1,2-naphthoquinone-2-diazide-4-sulfonyl chloride at high yield, wherein formation of impurities is prevented. The method includes the following steps: 1,2-naphthoquinone-2-diazide is reacted with chlorosulfuric acid, to thereby produce a mixture of a sulfonated compound and a chlorosulfonated compound of the diazide; and to the mixture, at least one substance selected from among thionyl chloride and phosphorus pentachloride is added for further reaction, to thereby obtain 1,2-naphthoquinone-2-diazide-4-sulfonyl chloride.
一种高产率生产1,2-萘醌-2-二叠氮-4-磺酰氯的有效方法,其中可防止杂质的形成。该方法包括以下步骤:1,2-萘醌-2-二叠氮化物与氯磺酸反应,从而生成二叠氮化物的磺化化合物和氯磺化化合物的混合物;向混合物中加入至少一种选自硫酰氯和五氯化磷的物质进行进一步反应,从而获得 1,2-萘醌-2-二叠氮化物-4-磺酰氯。