Neutral‐Eosin‐Y‐Photocatalyzed Silane Chlorination Using Dichloromethane. Issue 36 (5th August 2019) - Fan, Xuanzi
Abstract: Chlorosilanes are versatile reagents in organic synthesis and material science. A mild pathway is now reported for the quantitative conversion of hydrosilanes to silyl chlorides under visible‐light irradiation using neutral eosin Y as a hydrogen‐atom‐transfer photocatalyst and dichloromethane as a chlorinating agent. Stepwise chlorination of di‐ and trihydrosilanes was achieved in a highly selective fashion assisted by continuous‐flow micro‐tubing reactors. The ability to access silyl radicals using photocatalytic Si−H activation promoted by eosin Y offers new perspectives for the synthesis of valuable silicon reagents in a convenient and green manner. Abstract : A mild and convenient silane chlorination has been achieved using neutral eosin Y as a direct hydrogen‐atom‐transfer photocatalyst and dichloromethane as both the solvent and the chlorinating reagent. Selective stepwise chlorination of di‐ and trihydrosilanes was achieved in a controllable manner using continuous‐flow micro‐tubing reactors.