Readily available and inexpensive Earth-abundant alkali metal species are used as efficient catalysts for the transesterification of aryl or heteroaryl esters with phenols which is a challenging and underdeveloped transformation. The simple conditions and the use of heterogeneous alkali metal catalyst make this protocol very environmentally friendly and practical. This reaction fills in the missing part in transesterification reaction of phenols and provides an efficient approach to aryl esters, which are widely used in the synthetic and pharmaceutical industry.Scheme 1 C-O bond activation of esters.

By using different solvent molecules as structure agent, two novel selenidostannates were solvothermally synthesized. In compound K2HgSnSe4(1), tetrahedra Hg/SnSe4 are edge-sharing to form one-dimensional (1-D) anion chains [HgSnSe4]2-, and these...

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