Benzylic C(sp3)-H Functionalization for C-N and C-O Bond Formation via Visible Light Photoredox Catalysis
A visible light mediated highly selective benzylic C-H bond functionalization for intermolecular C-N and C-O bond formation is reported. This cross-dehydrogenative coupling reaction demonstrates a straightforward protocol for incorporating the heteroaromatics to the benzylic position. Benzylic oxidation of various alkyl aryls to corresponding carbonyl compounds has also been reported.
Pandey, Ganesh,Laha, Ramkrishna,Singh, Deepak
p. 7161 - 7171
(2016/08/30)
N-benzotriazoles: Preparation and Use in Synthesis
Methoxybenzenes and -naphthalenes are benzotriazolylmethylated in the para-position or if this is blocked in an ortho-position.The methylene groups in the products are readily substituted by electrophiles via the lithiated derivatives.Displacement ot the benzotriazole group can be effected by organometallic reagents or by electron-rich benzoid compounds to afford a versatile method for the synthesis of substituted aryl ethers.Key Words: Lithiation/ Grignard reaction/ Condensation/ Aryl ethers/ Diarylmethanes
Katritzky, Alan R.,Lan, Xiangfu,Lam, Jamshed N.
p. 1819 - 1826
(2007/10/02)
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