We have developed an iron（III） phthalocyanine chloride‐catalyzed oxidation–aromatization ofα,β‐unsaturated ketones with hydrazine hydrate. Various 3,5‐disubstituted 1H‐pyrazoles were obtained in good to excel...We have developed an iron（III） phthalocyanine chloride‐catalyzed oxidation–aromatization ofα,β‐unsaturated ketones with hydrazine hydrate. Various 3,5‐disubstituted 1H‐pyrazoles were obtained in good to excellent yields. This method offers several advantages, including room‐tem‐perature conditions, short reaction time, high yields, simple work‐up procedure, and use of air as an oxidant. The catalyst can be recovered and reused five times without loss of activity.展开更多
The monoaminotrinitro iron phthalocyanine(FeMATNPc)is used to connect with isonicotinic acid(INA)for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA,which is loaded in polyacrylonitril...The monoaminotrinitro iron phthalocyanine(FeMATNPc)is used to connect with isonicotinic acid(INA)for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA,which is loaded in polyacrylonitrile(PAN)nanofibers by electrospinning.The introduction of INA destroys theπ-πconjugated stack structure in phthalocyanine molecules and exposes more active sites.The FeMATNPc-INA structure is characterized by X-ray photoelectron spectroscopy and UV-visible absorption spectrum,and the FeMATNPcINA/PAN structure is characterized by Fourier transform infrared spectroscopy and X-ray diffraction.The FeMATNPc-INA/PAN can effectively activate peroxymonosulfate(PMS)to eliminate carbamazepine(CBZ)within 40 minutes(PMS 1.5 mmol/L)in the dark.The effects of catalyst dosage,PMS concentration,pH and inorganic anion on the degradation of CBZ are investigated.It has been confirmed by electron paramagnetic resonance,gas chromatography–mass spectroscopy and free radical capture experiments that the catalytic system is degraded by·OH,SO4^(·-)and Fe(IV)=O are the major active species,the singlet oxygen(^(1)O_(2))is the secondary active species.The degradation process of CBZ is analyzed by ultra-high performance liquid chromatography-mass spectrometry and the aromatic compounds have been degraded to small molecular acids.展开更多
A cost-effective and environmentally compliance FeCl3·6H2O catalyzed Friedel-Crafts alkylation of cyclic ketene dithioacetals with alcohols was developed. The reaction was efficient in the presence of catalyst lo...A cost-effective and environmentally compliance FeCl3·6H2O catalyzed Friedel-Crafts alkylation of cyclic ketene dithioacetals with alcohols was developed. The reaction was efficient in the presence of catalyst loading as low as 5%（molar fraction） in CH2Cl2 solvent at room temperature or under reflux conditions. A wide range of alkylated ketene dithioacetals were synthesized in excellent yields.展开更多
以邻氯苯甲醛(OCAD)、对氯苯甲醛(PCAD)和盐酸羟胺为原料,采用环境友好型无水FeCl3为催化剂,一步反应合成邻氯苯腈、对氯苯腈,并用IR和1 H NMR对产物结构进行了表征。通过单因素和正交试验确定了最佳工艺条件:n(邻、对氯苯甲醛)∶n(盐...以邻氯苯甲醛(OCAD)、对氯苯甲醛(PCAD)和盐酸羟胺为原料,采用环境友好型无水FeCl3为催化剂,一步反应合成邻氯苯腈、对氯苯腈,并用IR和1 H NMR对产物结构进行了表征。通过单因素和正交试验确定了最佳工艺条件:n(邻、对氯苯甲醛)∶n(盐酸羟胺)∶n(三氯化铁)=1.0∶1.2∶0.5,DMF为溶剂,在150℃条件下反应3h,邻氯苯腈的收率为91.5%,纯度为95.3%,对氯苯腈的收率为96.9%,纯度为97.2%。此方法工艺路线短,条件合理,绿色环保,反应收率高,产品纯度好。展开更多
基金supported by the Industrial Research Project of Shaanxi Science and Technology Department(2014K08-29)Science and Technology Plan Project of Xi’an(CXY1511(7))Scientific Research Foundation of Northwest University~~
文摘We have developed an iron（III） phthalocyanine chloride‐catalyzed oxidation–aromatization ofα,β‐unsaturated ketones with hydrazine hydrate. Various 3,5‐disubstituted 1H‐pyrazoles were obtained in good to excellent yields. This method offers several advantages, including room‐tem‐perature conditions, short reaction time, high yields, simple work‐up procedure, and use of air as an oxidant. The catalyst can be recovered and reused five times without loss of activity.
基金supported by National Natural Science Foundation of China (No.22006136)。
文摘The monoaminotrinitro iron phthalocyanine(FeMATNPc)is used to connect with isonicotinic acid(INA)for amide bonding and axial coordination to synthetic a unique catalyst FeMATNPc-INA,which is loaded in polyacrylonitrile(PAN)nanofibers by electrospinning.The introduction of INA destroys theπ-πconjugated stack structure in phthalocyanine molecules and exposes more active sites.The FeMATNPc-INA structure is characterized by X-ray photoelectron spectroscopy and UV-visible absorption spectrum,and the FeMATNPcINA/PAN structure is characterized by Fourier transform infrared spectroscopy and X-ray diffraction.The FeMATNPc-INA/PAN can effectively activate peroxymonosulfate(PMS)to eliminate carbamazepine(CBZ)within 40 minutes(PMS 1.5 mmol/L)in the dark.The effects of catalyst dosage,PMS concentration,pH and inorganic anion on the degradation of CBZ are investigated.It has been confirmed by electron paramagnetic resonance,gas chromatography–mass spectroscopy and free radical capture experiments that the catalytic system is degraded by·OH,SO4^(·-)and Fe(IV)=O are the major active species,the singlet oxygen(^(1)O_(2))is the secondary active species.The degradation process of CBZ is analyzed by ultra-high performance liquid chromatography-mass spectrometry and the aromatic compounds have been degraded to small molecular acids.
基金Supported by the National Natural Science Foundation of China（No,20902010）, the Foundation of Liaoning Provincial Education Administration, China（No.L2015003） and the Science Foundation of Anshan City, China（Nos.2012KJ02, 2014KJ05）.
文摘A cost-effective and environmentally compliance FeCl3·6H2O catalyzed Friedel-Crafts alkylation of cyclic ketene dithioacetals with alcohols was developed. The reaction was efficient in the presence of catalyst loading as low as 5%（molar fraction） in CH2Cl2 solvent at room temperature or under reflux conditions. A wide range of alkylated ketene dithioacetals were synthesized in excellent yields.
文摘以邻氯苯甲醛(OCAD)、对氯苯甲醛(PCAD)和盐酸羟胺为原料,采用环境友好型无水FeCl3为催化剂,一步反应合成邻氯苯腈、对氯苯腈,并用IR和1 H NMR对产物结构进行了表征。通过单因素和正交试验确定了最佳工艺条件:n(邻、对氯苯甲醛)∶n(盐酸羟胺)∶n(三氯化铁)=1.0∶1.2∶0.5,DMF为溶剂,在150℃条件下反应3h,邻氯苯腈的收率为91.5%,纯度为95.3%,对氯苯腈的收率为96.9%,纯度为97.2%。此方法工艺路线短,条件合理,绿色环保,反应收率高,产品纯度好。
