摘要
1 氯 4 丙氧基硫杂蒽酮(1 chloro 4 propoxythioxanthone,CPTX)是一种重要的紫外光固化材料光引发剂。以邻巯基苯甲酸为原料,与对氯苯酚在浓硫酸中环合,得到中间体1 氯 4 羟基硫杂蒽酮,收率为97 1%。1 氯 4 羟基硫杂蒽酮、溴丙烷和碳酸钾在丁酮中回流,得到CPTX,收率为87 5%。综合两步反应,收率由文献的52 6%提高到84 9%。
1Chloro4propoxythioxanthone (CPTX) is an important photoinitiator in photocuring compositions.It was prepared conveniently by a twostep process from readily available materials.In the first step,2mercaptobenzoic acid and 4chlorophenol were stirred in concentrated sulphuric acid to give the intermediate 1chloro4hydroxythioxanthone.Then 1chloro4hydroxythioxanthone,npropyl bromide and potassium carbonate were refluxed for 24 hours in butanone to afford CPTX.The reaction conditions were optimized.Total yield reached 849%,about 30% higher than that in literature.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2003年第6期343-344,357,共3页
Fine Chemicals