Two different terminal alkynes now can be coupled together in the presence of NiCl(2).6H(2)O/CuI by using an excess of one of the terminal alkyne substrates. The new method employed 20 mol % TMEDA as the ligand and environmentally benign O(2) or air as the oxidant. It is the first example using Ni-salt as catalyst by employing air or O(2) as oxidant, which led to efficient heterocoupling of two different alkynes.

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A rapid, green and efficient microwave-assisted protocol is developed for the air oxidation of boronic acids to phenols and alcohols under transition metal-free conditions.

Water purification via solar interface evaporation technique is an attractive method to solve water resources shortage. Many efforts have been devoted to developing materials with high absorbance and various heat...

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