Suppression effect of the Pd/C-catalyzed hydrogenolysis of a phenolic benzyl protective group by the addition of nitrogen-containing bases
作者:Hironao Sajiki、Hiroko Kuno、Kosaku Hirota
DOI:10.1016/s0040-4039(98)01514-7
日期:1998.9
benzyl ester and nitro functionalities distinguishing from the benzyl protective group for the phenolic hydroxyl group has been developed by the employment of 2,2′-dipyridyl as an additive. The suppressive effect on the benzyl ether hydrogenolysis was strongly influenced by the sorts of nitrogen-containing bases employed as an additive.
A novel type of hydrogenation using a catalyst poison: Chemoselective inhibition of the hydrogenolysis for O-benzyl protective group by the addition of a nitrogen-containing base
作者:Hironao Sajiki、Kosaku Hirota
DOI:10.1016/s0040-4020(98)00882-5
日期:1998.11
A mild and chemoselective hydrogenation method for a variety of reducible functional groups distinguishing from aliphatic and aromatic benzyl ethers was accomplished by the addition of an appropriate nitrogen-containing base to the Pd/C-catalyzed hydrogenation system.
Microballs Containing Ni(0)Pd(0) Nanoparticles for Highly Selective Micellar Catalysis in Water
作者:Manisha Bihani、Pranjal P. Bora、Maarten Nachtegaal、Jacek B. Jasinski、Scott Plummer、Fabrice Gallou、Sachin Handa
DOI:10.1021/acscatal.9b02316
日期:2019.8.2
water, which poses a significant hindrance to their application in aqueous synthetic catalysis. To overcome these barriers, ligated Ni(0) nanoparticles (diameter <1 nm) containing a minimum amount of Pd(0) in the microballs formed of amphiphile PS-750-M are developed and applied in the highly selective carbamate cleavage. Selectivity and functional group tolerance are thoroughly investigated. Control