Matches in SemOpenAlex for { <https://semopenalex.org/work/W2392316259> ?p ?o ?g. }
Showing items 1 to 53 of
53
with 100 items per page.
- W2392316259 abstract "Friedel-Crafts acylation reaction of crosslinked polystyrene(CPS) microspheres was conducted using two kinds of ω-chloroacyl chloride as reagents,and chloromethylation reaction of CPS microspheres was performed using 1,4-dichloromethyoxybutane without carcinogenic toxicity as reagent.By these reactions,exchangeable chlorine was introduced onto the surface of CPS microspheres and resulted in chemically modified CPS microspheres.Subsequently,the modified microspheres were transferred into quaternary phosphonium-type triphase catalysts via quaternary phosphonium(QP) reaction with triphenylphosphine.Three kinds of quaternary phosphonium-type triphase catalysts QP-CPS with different spacer arm lengths were obtained.The effects of main factors on quaternary phosphonium reaction were examined.The phase-transfer catalytic activity of the prepared triphase catalysts for esterification between benzyl chloride and sodium acetate was investigated.The results indicate that the stability of quaternary phosphonium is poor.The reaction temperature and time need to be controlled,and the solvent with higher polarity is adapted during synthesis.The prepared quaternary phosphonium-type triphase catalysts have higher activity for the synthesis of benzyl acetate,and the reaction species acetate ion can be effectively transferred between the liquid-solid-liquid phases.In comparison with quaternary ammonium-type catalyst QN-CPS,the quaternary phosphonium-type triphase catalyst QP-CPS has higher catalytic activity.The catalyst QP-CPS with a longer spacer arm has higher catalytic activity.The hydrophilic and hydrophobic properties of catalyst QP-CPS also greatly affect the phase-transfer catalytic activity." @default.
- W2392316259 created "2016-06-24" @default.
- W2392316259 creator A5014837150 @default.
- W2392316259 date "2010-01-01" @default.
- W2392316259 modified "2023-09-24" @default.
- W2392316259 title "Preparation of Quaternary Phosphonium-Type Triphase Catalysts and Relationship between Chemical Structure and Phase Transfer Catalytic Activity" @default.
- W2392316259 hasPublicationYear "2010" @default.
- W2392316259 type Work @default.
- W2392316259 sameAs 2392316259 @default.
- W2392316259 citedByCount "0" @default.
- W2392316259 crossrefType "journal-article" @default.
- W2392316259 hasAuthorship W2392316259A5014837150 @default.
- W2392316259 hasConcept C161790260 @default.
- W2392316259 hasConcept C178790620 @default.
- W2392316259 hasConcept C185592680 @default.
- W2392316259 hasConcept C2775904426 @default.
- W2392316259 hasConcept C2778377188 @default.
- W2392316259 hasConcept C2780707935 @default.
- W2392316259 hasConcept C40875361 @default.
- W2392316259 hasConceptScore W2392316259C161790260 @default.
- W2392316259 hasConceptScore W2392316259C178790620 @default.
- W2392316259 hasConceptScore W2392316259C185592680 @default.
- W2392316259 hasConceptScore W2392316259C2775904426 @default.
- W2392316259 hasConceptScore W2392316259C2778377188 @default.
- W2392316259 hasConceptScore W2392316259C2780707935 @default.
- W2392316259 hasConceptScore W2392316259C40875361 @default.
- W2392316259 hasLocation W23923162591 @default.
- W2392316259 hasOpenAccess W2392316259 @default.
- W2392316259 hasPrimaryLocation W23923162591 @default.
- W2392316259 hasRelatedWork W1971297943 @default.
- W2392316259 hasRelatedWork W2020611538 @default.
- W2392316259 hasRelatedWork W2030905740 @default.
- W2392316259 hasRelatedWork W2047550095 @default.
- W2392316259 hasRelatedWork W2082342980 @default.
- W2392316259 hasRelatedWork W2085950596 @default.
- W2392316259 hasRelatedWork W2086097652 @default.
- W2392316259 hasRelatedWork W2091262139 @default.
- W2392316259 hasRelatedWork W2162544969 @default.
- W2392316259 hasRelatedWork W2209310252 @default.
- W2392316259 hasRelatedWork W2349951343 @default.
- W2392316259 hasRelatedWork W2354067095 @default.
- W2392316259 hasRelatedWork W2382969769 @default.
- W2392316259 hasRelatedWork W2388223926 @default.
- W2392316259 hasRelatedWork W2392082459 @default.
- W2392316259 hasRelatedWork W2768509212 @default.
- W2392316259 hasRelatedWork W2952912670 @default.
- W2392316259 hasRelatedWork W2837653509 @default.
- W2392316259 hasRelatedWork W2858606855 @default.
- W2392316259 hasRelatedWork W3182832426 @default.
- W2392316259 isParatext "false" @default.
- W2392316259 isRetracted "false" @default.
- W2392316259 magId "2392316259" @default.
- W2392316259 workType "article" @default.