转移催化剂的合成、性能及应用研究(6)
时间:2026-01-23
时间:2026-01-23
山东大学硕士学位论文
resultsofexperimentshowthat,withhigheryield,chloridizedwithchlorineisthemoreidealmethod.Last,weperformanedtheesterificationreactionofchlorinesubstitutedproductionwithpotassiumacetate.Thecatalyticcapabilityofthenovelcatalysthavebeenvalidatedandcomparedtothehomogeneitycatalyst.Theresultsissatisfying.
ThecatalyticcapabilityofthecatalystwasvalidatedintheesterificationreactionofchlorinesubstitutedHexamethyldisiloxaneandchlorinesubstitutedoctamethylcyclotetrasiloxanewithpotassiumacetate.Theresultsofexperimentshowthat,Comparedtothehomogeneitycatalyst,theformer’Sesterificationratewasincreasedabout10%andthelatter’Sesterificationratewasincreasedabout20%atthesamereactionconditions.Atthesametimewerealizedthesynthesisofesterifiedcarbonfunctionalgroupsorganicsiliconcompoundwithhigheryieldundermildreactionconditions.ThereactionconditionsarethattheratioofchlorinesubstitutedHexamethyldisiloxanetopotassiumacetateandcatalystis1:1.3:0.1(m01),thesolutioniswaterandthesuitablerefluxisat60℃for1.5hours.
Ourstudyhaveseveralinnovationwhichcanbeexpressedasfollow:
1.Themethodofsynthesizingseveralnovelquaternaryammoniumsaltphasetransfer
catalystsbyintroducingtrimethysilyltothemisaninnovation.Thosecompoundshavenotbeenreportedbefore.
2.Usingthecompoundsmentionedaboveasphasetransfercatalysts,wehave
synthesizedthecarbonfunctionalgroupsorganicsiliconcompounds,andfoundanewconvenientmethodwithhigheryieldundermildreactionconditions.
3.ThestudyonorganicsiliconcompoundscontainingN—Simatchbondsisa
significativework.Anybreakthroughwilldogreatbenefittoorganicsiliconchemistry.4