An amphipathic Schiff base complex with Cu(Ⅱ) was synthesized from p-cresol a nd dodecanoyl chloride with total yield of 36 8%. The structure and amphipathic property of the ligand and Cu complex have been invest iga...An amphipathic Schiff base complex with Cu(Ⅱ) was synthesized from p-cresol a nd dodecanoyl chloride with total yield of 36 8%. The structure and amphipathic property of the ligand and Cu complex have been invest igated. The oxidation of benzyl alcohol catalyzed by the complex in alkali solution gave benzaldehyde in yield of 57 8%.展开更多
The inclusion complex of benzyl acetate (BA) with β-cyclodextrin (β-CD) was pre-pared and was confirmed by thermal analysis and X-ray diffeaction (XRD). The composition of thecomplex was identified by thermogravimet...The inclusion complex of benzyl acetate (BA) with β-cyclodextrin (β-CD) was pre-pared and was confirmed by thermal analysis and X-ray diffeaction (XRD). The composition of thecomplex was identified by thermogravimetry (TG) and elemental analysis as β-CD.C9H10O2 .6H2O.TG and DSC studies showed that the thermal dissociation of β-CD.C9H10O2.6H2O took place inthree stages: the dehydration occurred at 80-120 ℃; the dissociation of β-CD.C9H10O2 occurredat 245-270℃; and the decomposition of β-CD began at 285℃. The kinetics of dissocia-tion of β-CD.C9H10O2 was studied by means of TG. The results showed that the dissociation ofβ-CD.C9H10O2 was controlled by a two-dimensional random nucleation and subsequent growthprocess (A3), the activation cnergy E is 172.85kJ.mol-1, and the pre-exponential factor A is1.1392×1016.min- 1.展开更多
A facile synthesis of piperonol is reported from catechol. Reacted catechol with excess dichloromethane in an autoclave under nitrogen atmosphere gave 88 4% 1,3-benzodioxole(1), which is directly chlo romethylated to ...A facile synthesis of piperonol is reported from catechol. Reacted catechol with excess dichloromethane in an autoclave under nitrogen atmosphere gave 88 4% 1,3-benzodioxole(1), which is directly chlo romethylated to yield 90 1% 5-chloromethyl 1,3-benzodioxole(2) by hydrogen chloride saturated triformol. 2 can easily convert to piperonal by treatment with alcoholic solution of Na 2CO 3 in yield of 97 7%. The total yield is 78%.展开更多
文摘An amphipathic Schiff base complex with Cu(Ⅱ) was synthesized from p-cresol a nd dodecanoyl chloride with total yield of 36 8%. The structure and amphipathic property of the ligand and Cu complex have been invest igated. The oxidation of benzyl alcohol catalyzed by the complex in alkali solution gave benzaldehyde in yield of 57 8%.
文摘The inclusion complex of benzyl acetate (BA) with β-cyclodextrin (β-CD) was pre-pared and was confirmed by thermal analysis and X-ray diffeaction (XRD). The composition of thecomplex was identified by thermogravimetry (TG) and elemental analysis as β-CD.C9H10O2 .6H2O.TG and DSC studies showed that the thermal dissociation of β-CD.C9H10O2.6H2O took place inthree stages: the dehydration occurred at 80-120 ℃; the dissociation of β-CD.C9H10O2 occurredat 245-270℃; and the decomposition of β-CD began at 285℃. The kinetics of dissocia-tion of β-CD.C9H10O2 was studied by means of TG. The results showed that the dissociation ofβ-CD.C9H10O2 was controlled by a two-dimensional random nucleation and subsequent growthprocess (A3), the activation cnergy E is 172.85kJ.mol-1, and the pre-exponential factor A is1.1392×1016.min- 1.
文摘A facile synthesis of piperonol is reported from catechol. Reacted catechol with excess dichloromethane in an autoclave under nitrogen atmosphere gave 88 4% 1,3-benzodioxole(1), which is directly chlo romethylated to yield 90 1% 5-chloromethyl 1,3-benzodioxole(2) by hydrogen chloride saturated triformol. 2 can easily convert to piperonal by treatment with alcoholic solution of Na 2CO 3 in yield of 97 7%. The total yield is 78%.
