卤素
化学
氯化物
五氧化二磷
吸收(声学)
有机化学
五氧化二铌
材料科学
烷基
铌
复合材料
标识
DOI:10.1002/recl.19490680605
摘要
Abstract Four methylbenzothiophenes and two methylnaphthothiophenes were synthesized by cyclization of arylketosulphides (obtained by reaction of α‐halogen ketones on thiophenols) in the presence of zinc chloride or phosphorus pentoxide. U.V. absorption spectra of the benzo and naphthothiophenes and their dioxides were measured to be used for the identification of benzothiophenes in mixtures with other compounds.
科研通智能强力驱动
Strongly Powered by AbleSci AI