Methylation of arenes via Ni-catalyzed aryl C–O/F activation
作者:Bing-Tao Guan、Shi-Kai Xiang、Tao Wu、Zuo-Peng Sun、Bi-Qin Wang、Ke-Qing Zhao、Zhang-Jie Shi
DOI:10.1039/b718998b
日期:——
Aryl CâO and CâF can be transformed into CâMe viaNi-catalyzed coupling with MeMgBr under mild conditions.
芳基C–O和C–F可以在温和条件下通过Ni催化与MeMgBr的耦合反应转化为C–Me。
Mutual Activation: Suzuki-Miyaura Coupling through Direct Cleavage of the sp2 CO Bond of Naphtholate
作者:Da-Gang Yu、Zhang-Jie Shi
DOI:10.1002/anie.201101461
日期:2011.7.25
Working together: A new approach of mutualactivation between naphtholates and aryl boronic acid derivatives by the formation of borates to facilitate the Suzuki–Miyauracouplingthroughdirectcleavage of the sp2CObond by nickel catalysis is described (see scheme; R′: annulated ring system). Various naphtholates and aryl boronic acid derivatives could be directly coupled in good yields.
A compound represented by the formula: ##STR1## and a compound represented by the formula: ##STR2## wherein R is C.sub.1 -C.sub.3 alkyl or C.sub.1 -C.sub.3 alkoxy, which is an intermediate for producing the above compound (1) are disclosed.