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A composite catalytic system using ZnIn2S4-Sv containing sulfur vacancies as light harvesting material and nickel-based polyoxometalate Na6K4[Ni4(H2O)2(PW9O34)2] (Ni4POM) as cocatalyst was developed. Ni4POM/ZnIn2S4-Sv gives a good hydrogen production rate of...

We have developed a convenient synthesis of a series of β-fluoramides in 65% yield. The process involved tandem fluorination/Ritter reaction to synthesis β-fluoramides based on α-dizao 2H-benzopyran-4-one compounds. Selectfluor was...

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A novel method for preparing chromones from α-diazo-flavanones has been developed. Good yields and regioselectivity are obtained through HCl catalysis and Rh2(Oct)4 catalysis. The chromone obtained can undergo a one-pot Diels-Alder reaction to synthesize flavanone propellane in high yield. Mechanisms about 1,2-migration under both catalysts are proposed.