肼合罗丹明B的合成
摘要:肼合罗丹明BSynthesisofRhodamineBethanol.RB-hydrazineg,Toa100mLflask,mmol)wasdissolvedin30mLmL(excess)hydrazinehydrate(85%)wasthenadded,dropwisewithvigorousstirringatroomtemperature.Aftertheaddition,thestirredmixturewasheatedtorefluxinanairbathfor2h.Thesolutionchangedfromdarkpurpletolightorangeandbecametransparent.Then,themixturewascooledandthesolventwasremovedunderreducedpressure.1MHClwasaddedtothesolidintheflasktogenerateatransparentredsolution.Afterthat,1MNaOHwasaddedslowlywithstirringuntilthepHofthesolutionreached9–10.Theresultingprecipitatewasfilteredandwashed3timeswithwater.AfterdryingunderanIRlight,thereactionaffordedgofapinksolid.在一个100ml的烧瓶中加入,的罗丹明B,用30ml乙醇溶解。再加入ml过量的水合肼(85%),
温馨提示:当前文档最多只能预览
5 页,若文档总页数超出了
5 页,请下载原文档以浏览全部内容。
本文档由 匿名用户 于 2020-11-08 07:39:41上传分享