Au (111) surface can serve as a Lewis acid to couple with a Lewis base (e.g. imine or nitrile) to form the Au-coupled FLP (frustrated Lewis pair, left) which can cleave H2, further achieving hydrogenation of small imines and nitriles.

It is still a challenge to develop green, simple and effective approaches to prepare aromatic iodides. Herein, a novel and green strategy for the direct mono-iodination of aromatic compounds starting with molecular iodine has been developed. The strategy uses ceria nanocrystals to decompose hydro-gen peroxide, giving hydroxyl radicals which are demonstrated experimentally and computationally to be crucial to promote the iodinations.

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Hydroquinone combined with FeCl3 can reduce the methanolysis time of N‐vinylcarbazole in CH3OH from 9 h to 1 h, but the addition of hydroquinone to Fe(NO3)3 will slow the methanolysis and quench the cyclobutanation process. The addition of H2O2 successfully made the FeCl3 catalytic cyclobutanization of N‐vinylcarbazole in the yield from zero up to 33%. Copyright © 2011 John Wiley & Sons, Ltd.

A n E c o n o m i c a l A p p r o a c h t o t h e S y n t h e s i s o f U n s a t u r a t e d T h i a c r o w n E t h e r sAbstract: The inexpensive starting material, 1,1-dichloroethylene, was used as a substitute for 1,2-dichloroethylene to synthesize unsaturated thiacrown ethers through the reaction of 1,1-dichloroethylene with sodium sulfide in the presence of a 15-crown-5 catalyst. Besides the compounds containing cis-carbon-carbon double bonds, two unsaturated thiacrown ethers each containing one transcarbon-carbon double bond were also isolated.