Development of a Rhodium(II)-Catalyzed Chemoselective C(sp3)-H Oxygenation
We report the first example of RhII-catalyzed chemoselective double C(sp3)-H oxygenation, which can directly transform various toluene derivatives into highly valuable aromatic aldehydes with great chemoselectivity and practicality. The critical combination of catalyst Rh(OAc)2, oxidant Selectfluor, and solvents of TFA/TFAA promises the successful delivery of the oxidation with satisfactory yields. A possible mechanism involving a unique carbene-Rh complex is proposed, and has been supported by both experiments and theoretical calculations.
Lin, Yun,Zhu, Lei,Lan, Yu,Rao, Yu
supporting information
p. 14937 - 14942
(2015/10/19)
Synthesis and structure-activity relationships of benzophenone-bearing diketopiperazine-type anti-microtubule agents
KPU-105 (4), a potent anti-microtubule agent that contains a benzophenone was derived from the diketopiperazine-type vascular disrupting agent (VDA) plinabulin 3, which displays colchicine-like tubulin depolymerization activity. To develop derivatives wit