A mild and facile method for generation of p-methoxybenzylcationthroughNIS-mediatedactivation of p-methoxybenzyl4-pentenylether was achieved. Under the present activation conditions, various alcohols were converted to the corresponding p-methoxybenzylethers. A scope and limitation of the present p-methoxybenzylation reaction was also investigated.
A photocatalyst-free aqueous-phase hydrosulfonylation of alkenes and alkynes with sulfonyl chlorides is described. The reaction proceeds efficiently under visible light irradiation in the presence of (TMS)3SiH and features mild conditions, broad substrate scope and excellent functional-group compatibility, offering a convenient and sustainable method for the synthesis of sulfones.