Phosphine‐substituted N‐coordinated Stannylene: Efficient Catalyst in Ketone Hydroboration

Abstract

AbstractP‐substituted stannylene (Ph2PCH2)(L)Sn containing N,C,N‐pincer ligand (L=[2,6‐(Me2NCH2)2C6H3]) was prepared. The complex was further oxidised to prepare P‐substituted organotin (IV) compounds (Ph2PCH2)(L)SnX2. Finally, P(S)‐substituted N‐coordinated stannylene [(Ph2P(S)CH2](L)Sn containing P atom in the oxidation state +V was also prepared. All these P‐substituted organotins were tested as catalysts for the hydroboration of ketones to see the effect of oxidation numbers of Sn/P atoms. Stannylene (Ph2PCH2)(L)Sn showed remarkable conversions with TOF about 1800 h−1 and is suitable for the reduction of several ketones. The mechanistic studies are also discussed.