Monoaromatic tricyclicditerpenes are biomarker of shale,coal and heavy oil.Its orgin was from diterpenes of higher plants and resin which were decarboxylated and partically aromatized under complex geological environm...Monoaromatic tricyclicditerpenes are biomarker of shale,coal and heavy oil.Its orgin was from diterpenes of higher plants and resin which were decarboxylated and partically aromatized under complex geological environment.Here five monoaroma tictricyclicditerpenes have been synthesize dusing 1,2,3,4 tetrahydronaphthane and succinct anhydride.All compounds were confirmed IR, 1H NMR and MS.展开更多
In this paper,9,10-bis（benzenemethylene-sulfurmethylene）anthracene derived from the starting material anthracene was synthesized and characterized by IR,1H NMR.The result of molecular recogntion test showed that thi...In this paper,9,10-bis（benzenemethylene-sulfurmethylene）anthracene derived from the starting material anthracene was synthesized and characterized by IR,1H NMR.The result of molecular recogntion test showed that this host molecule had strong complexation to Cu2+.The mechanism of recognition was discussed.展开更多
A new schiff-base and its metal complexes were prepared by salicylaldehyde with o-aminobenzioc acid.Their compositions and structures were characterized by elemental analysis ,IR, UV-Vis ,MR, and 1HNMR. In a...A new schiff-base and its metal complexes were prepared by salicylaldehyde with o-aminobenzioc acid.Their compositions and structures were characterized by elemental analysis ,IR, UV-Vis ,MR, and 1HNMR. In addition ,the inhibition of the complexes against the reaction of Vc oxidated by H2O2 has been studied.展开更多
The catalysis of potassium carbonate in perkin reaction for the preparation of a-furanaerylic acid was discussed and comparedwith that of sodium acetate. With K2CO3 the Perkin reaction of furfuraldehtyde can be carrie...The catalysis of potassium carbonate in perkin reaction for the preparation of a-furanaerylic acid was discussed and comparedwith that of sodium acetate. With K2CO3 the Perkin reaction of furfuraldehtyde can be carried out at lower temperature, in shorter time,with less catalyst in higher yield and with better repeatability.展开更多
文摘Monoaromatic tricyclicditerpenes are biomarker of shale,coal and heavy oil.Its orgin was from diterpenes of higher plants and resin which were decarboxylated and partically aromatized under complex geological environment.Here five monoaroma tictricyclicditerpenes have been synthesize dusing 1,2,3,4 tetrahydronaphthane and succinct anhydride.All compounds were confirmed IR, 1H NMR and MS.
文摘In this paper,9,10-bis（benzenemethylene-sulfurmethylene）anthracene derived from the starting material anthracene was synthesized and characterized by IR,1H NMR.The result of molecular recogntion test showed that this host molecule had strong complexation to Cu2+.The mechanism of recognition was discussed.
文摘A new schiff-base and its metal complexes were prepared by salicylaldehyde with o-aminobenzioc acid.Their compositions and structures were characterized by elemental analysis ,IR, UV-Vis ,MR, and 1HNMR. In addition ,the inhibition of the complexes against the reaction of Vc oxidated by H2O2 has been studied.
文摘The catalysis of potassium carbonate in perkin reaction for the preparation of a-furanaerylic acid was discussed and comparedwith that of sodium acetate. With K2CO3 the Perkin reaction of furfuraldehtyde can be carried out at lower temperature, in shorter time,with less catalyst in higher yield and with better repeatability.
