Direct Benzylic Alkylation via Ni-Catalyzed Selective Benzylic sp3 C−O Activation
摘要:
This article demonstrates the first cross coupling of benzyl ether with Grignard reagents via Ni-catalyzed benzylic sp(3) C-O activation with high efficiency and excellent chemoselectivity. Benzylic sp(3) C-O and aryl sp(2) C-O were differentiated, controlled by ligands.
Direct Benzylic Alkylation via Ni-Catalyzed Selective Benzylic sp3 C−O Activation
摘要:
This article demonstrates the first cross coupling of benzyl ether with Grignard reagents via Ni-catalyzed benzylic sp(3) C-O activation with high efficiency and excellent chemoselectivity. Benzylic sp(3) C-O and aryl sp(2) C-O were differentiated, controlled by ligands.
Charge polarization in photoexcited alkoxy-substituted biphenyls: formation of biphenyl quinone methides
作者:Yijian Shi、Peter Wan
DOI:10.1039/c39950001217
日期:——
Alkoxy-substituted biphenyls are highly polarized in S1, with the negative charge residing on the ring not possessing the alkoxy group, enabling the photogeneration of spectrophotometrically observable transient biphenyl quinone methides by laser flash photolysis.
Solvolysis and ring closure of quinone methides photogenerated from biaryl systems
作者:Yijian Shi、Peter Wan
DOI:10.1139/v05-138
日期:2005.9.1
A variety of biaryl quinone methides have been photogenerated with a range of efficiencies from biaryl precursors 46 and 8, 10, and 11, all having hydroxyl and hydroxymethyl substituents on altern...
Direct Benzylic Alkylation via Ni-Catalyzed Selective Benzylic sp<sup>3</sup> C−O Activation
作者:Bing-Tao Guan、Shi-Kai Xiang、Bi-Qin Wang、Zuo-Peng Sun、Yang Wang、Ke-Qing Zhao、Zhang-Jie Shi
DOI:10.1021/ja710944j
日期:2008.3.1
This article demonstrates the first cross coupling of benzyl ether with Grignard reagents via Ni-catalyzed benzylic sp(3) C-O activation with high efficiency and excellent chemoselectivity. Benzylic sp(3) C-O and aryl sp(2) C-O were differentiated, controlled by ligands.