DSD酸合成新工藝的研究.pdf

1、大連理工大學碩士學位論文DSD酸合成新工藝的研究姓名：周海濱申請學位級別：碩士專業(yè)：有機化學指導教師：陳宏博20020625Abstract4，4Diaminostilbene一2，2’一disulfonicacid(DSD—acid)isanimportantintermediateintheproductionoffluorescentwhiteningagents，directdyeandfungicideswhichisinag

2、reatdemandeveryyearforitswideapplicationHowever，itisimperativetodevelopanewprocessforitsproductionduetothecriticalproblemsexistinginthepresentprocedure，suchaspoorquality，lowyield，severepollution，etcTheprocessfortheprepar

3、ationof4，4’一Diaminostilbene一2，2。一disulfonicacidwasimprovedthroughtheworkpresentedinthisdissertationbyoxidationof4—nitrotoluene一2sulphonicacidwithoxygeninamixtureofwaterandorganicsolventsresultingin952％productwith991％puri

4、tyThenewprocessforpreparing44Diaminostilbene2，2disulfonicacidwascharacterizedbycarryingoutthecatalytichydrogenationof44。一dinitrost訂bene一2，2’一disulfonicacidoritsalkalisaltsinpresenceofbothPd／CandOVNinwater，theamountofOVNr

5、angingfrom01toO2％byweightof44’一dinitrostilbene一2，2disulfonicacidoritsalkalisalts，yielding987％ofdesiredproductwith993％purityTheoptimalconditionsforthetworeactionsweredeterminedtoprovideasoundbasisforfurtherindustrializati