28131-24-0Relevant articles and documents
Photochemical regioselective C(sp3)-H amination of amides using N-haloimides
Pan, Lei,Elmasry, Joseph,Osccorima, Tomas,Cooke, Maria Victoria,Laulhé, Sébastien
supporting information, p. 3389 - 3393 (2021/05/07)
A metal-free regioselective C(sp3)-H amination of amides using N-haloimides in the presence of lithium tert-butoxide and visible light is presented herein. This photoexcited approach is straightforward, and it aminates a wide variety of amides under mild conditions without the use of photocatalysts, external radical initiators, or oxidants. A halogen-bonded intermediate between the tert-butoxide base and the N-haloimide is proposed to be responsible for the increased photoreactivity. Calculations show that the formation of this electron donor-acceptor complex presents an exergonic energy profile.
Nickel-catalyzed C-O bond reduction of aryl and benzyl 2-pyridyl ethers
Li, Jing,Wang, Zhong-Xia
supporting information, p. 2138 - 2141 (2018/03/06)
The reduction of aryl and benzyl 2-pyridyl ethers with sodium isopropoxide was carried out via nickel-catalyzed C-OPy bond cleavage, giving reductive products in reasonable to excellent yields. This method allowed the 2-pyridyloxy group to be directly rem
Efficient N-Boc protection of amines by a reusable heterogeneous solid acid nanocatalyst at room temperature
Veisi, Hojat,Sedrpoushan, Alireza,Ghazizadeh, Habibollah,Hemmati, Saba
, p. 1451 - 1461 (2016/04/26)
An efficient and rapid protocol for chemoselective N-Boc protection of various structurally different aryl, aliphatic, and heterocyclic amines is reported with (Boc)2O using mesoporous silica phenylsulfonic acid (SBA-15-Ph-SO3H) as a recyclable and heterogeneous solid acid nanocatalyst under solvent-free condition at ambient temperature. The catalyst can be easily recovered and reused for ten reaction cycles for protection of amines without considerable loss of activity. The advantages of this green method are simplicity, easy workup, chemoselectivity, short reaction time, and excellent yield.