Practical Catalytic Cleavage of C(sp
<sup>3</sup>
)−C(sp
<sup>3</sup>
) Bonds in Amines
作者:Wu Li、Weiping Liu、David K. Leonard、Jabor Rabeah、Kathrin Junge、Angelika Brückner、Matthias Beller
DOI:10.1002/anie.201903019
日期:2019.7.29
The selective cleavage of thermodynamically stable C(sp3)−C(sp3) single bonds is rare compared to their ubiquitous formation. Herein, we describe a general methodology for such transformations using homogeneous copper‐based catalysts in the presence of air. The utility of this novel methodology is demonstrated for Cα−Cβ bond scission in >70 amines with excellent functional group tolerance. This transformation
Visible‐Light‐Mediated Aerobic Oxidative C(
<i>sp</i>
<sup>
<i>3</i>
</sup>
)−C(
<i>sp</i>
<sup>
<i>3</i>
</sup>
) Bond Cleavage of Morpholine Derivatives Using 4CzIPN as a Photocatalyst
作者:Chun‐Lin Dong、Lan‐Qian Huang、Zhi Guan、Chu‐Sheng Huang、Yan‐Hong He
DOI:10.1002/adsc.202100455
日期:2021.8.3
Herein, a metal-free strategy for the aerobic oxidative cleavage of the inert C(sp3)−C(sp3) bond was developed. Deconstruction of morpholine derivatives was conducted using visible light as an energy source and O2 as an oxidant under mild conditions. This procedure demonstrated suitable selectivity and functional group tolerance. Moreover, a possible mechanism involving a radical process was proposed
Copper loaded nitrogen-rich mesoporous carbon nitride as a highly efficient photocatalyst for selective oxidative cleavage of C(sp<sup>3</sup>)–C(sp<sup>3</sup>) bonds at room temperature under visible light
作者:Jiabao Guo、Yizhuo Zhao、Peng Wang、Yang Song、Yifei Shao、Li Zhu、Xiaoquan Yao
DOI:10.1039/d2ta00660j
日期:——
attention, despite its importance in organic synthesis and biochemistry. Herein, a novel copper loaded nitrogen-rich mesoporouscarbonnitride material was designed and synthesized, and utilized as a highly efficient photocatalyst for the inert C–C bond cleavage of amines under blue light irradiation. With oxygen as a benign oxidant, good to excellent yields were achieved for various functionalized amines
absence of π-orbitals, the oxidative cleavage of the kinetically and thermodynamically stable C(sp3)–C(sp3) bond is extremely difficult and remains scarcely explored. In this work, under the double argument of quantum mechanics (QM) computations and meticulous experiments on our well-designed C–C single bond cleavage mechanism, we discovered a means of photoinduced selective oxidative C(sp3)–C(sp3) bond cleavage