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A Green and Efficient Synthesis of Xanthenedione Derivatives Promoted by InCl_3·4H_2O in Ionic Liquid 被引量:4
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作者 XueYuanHU XueSenFAN +1 位作者 XinYingZHANG JianJiWANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第3期293-295,共3页
Xanthenedione derivatives were prepared through lnCl3·4H2O promoted condensation of aldehydes with 5, 5-dimethyl-1, 3-cyclohexandione in [bmiml[BF4]. The advantages of this method are: simple operation, environme... Xanthenedione derivatives were prepared through lnCl3·4H2O promoted condensation of aldehydes with 5, 5-dimethyl-1, 3-cyclohexandione in [bmiml[BF4]. The advantages of this method are: simple operation, environmental benign and high efficiency. Moreover, the reaction media and the catalyst can be recovered and reused effectively for at least six times. 展开更多
关键词 Ionic liquid xanthenedione derivatives indium trichloride.
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An Efficient and Green Synthesis of 5-Oxo-5, 6, 7, 8-tetrahydro- 4H-benzo-[b]-pyran Derivatives Promoted by InCl_3·4H_2O Under Microwave Irradiation 被引量:2
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作者 XueYuanHU XueSenFAN +2 位作者 XinYingZHANG GuiRongQU YanZhenLI 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第7期886-888,共3页
A rapid and facile preparation of benzo-[b]-pyran derivatives through condensation of chalcone and 5, 5-dimethyl-1,3-cyclohexandione under microwave irradiation in the presence of catalytic amount of InCl3·4H2O h... A rapid and facile preparation of benzo-[b]-pyran derivatives through condensation of chalcone and 5, 5-dimethyl-1,3-cyclohexandione under microwave irradiation in the presence of catalytic amount of InCl3·4H2O has been developed. With its high efficiency, operational simplicity and environmental benignancy, this method may provide a useful alternative for the preparation of benzo-[b]-pyran derivatives. 展开更多
关键词 Pyran derivatives indium trichloride microwave irradiation.
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FeCl_3·6H_2O Catalyzed Reaction of Aromatic Aldehydes with 5, 5-Dimethyl-1, 3-cyclohexandione in Ionic Liquids 被引量:1
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作者 XueSenFAN YanZhenLI XinYingZHANG XueYuanHU JianJiWANG 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第7期897-899,共3页
The reaction of aromatic aldehydes 1 with 5, 5-dimethyl-1, 3-cyclohexandione 2 was investigated in this paper by using [bmim][BF4] as the reaction medium. It was found that when the reaction was carried out in the pre... The reaction of aromatic aldehydes 1 with 5, 5-dimethyl-1, 3-cyclohexandione 2 was investigated in this paper by using [bmim][BF4] as the reaction medium. It was found that when the reaction was carried out in the presence of catalytic amount of FeCl3·6H2O, xanthenediones 3 was obtained in high yields. On the other hand, when a combination of trimethylchlorosilane (TMSCl) and FeCl3·6H2O was employed as the catalyst, the reaction afforded ring-opening derivatives of xanthenediones 4 with high efficiency. 展开更多
关键词 FeCl3·6H2O ionic liquids xanthenedione catalysis.
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Cooperation between ligninolytic enzymes produced by superior mixed flora 被引量:1
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作者 WANGHai-lei LIZong-yi +2 位作者 GUOWei-yun WANGZhen-yu PANFeng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2005年第4期620-622,共3页
Since the ability to degrade lignin with one kind of white-rot fungi or bacteria was very limited, superior mixed flora's ability to degrade lignin was investigated by an orthogonal experiment in this paper. The r... Since the ability to degrade lignin with one kind of white-rot fungi or bacteria was very limited, superior mixed flora's ability to degrade lignin was investigated by an orthogonal experiment in this paper. The results showed that superior mixed flora reinforced the ability to degrade lignin, the degradation rates of both sample 9 and 10 were beyond 80% on the day 9 The cooperation between lignin peroxidase(LiP), Mn-dependent peroxidase(MnP) and laccase (Lac) for lignin degradation was also studied. By examining the activities of three enzymes produced by superior mixed flora, it was found that Lac was a key enzyme in the process of biological degradation of lignin but Lip was not; the enzyme activity ratios of Lac/MnP and Lac/LiP were significantly correlative with the degradation rate of lignin at the 0 01 level; and the ratio of MnP/LiP was an important factor affecting the degradation rate of lignin. 展开更多
关键词 white-rot fungi lignin peroxidase Mn-dependent peroxidase LACCASE orthogonal experiment
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Preparation and Photocatalytic Activity of Nanocrystalline GdFeO3
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作者 NiuXinshu LiHonghua ZhangFeng LiuGuoguang JiangKai 《Journal of Rare Earths》 SCIE EI CAS CSCD 2005年第1期i001-i002,共2页
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