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
[EN] ALKENYL-SUBSTITUTED SPIROCYCLIC SULFAMIDES AS INHIBITORS OF GAMMA-SECRETASE<br/>[FR] SULFAMIDES SPIROCYCLIQUES SUBSTITUES PAR ALCENYLE UTILISES COMME INHIBITEURS DE LA GAMMA-SECRETASE
申请人:MERCK SHARP & DOHME
公开号:WO2003093251A1
公开(公告)日:2003-11-13
Compounds of formula (I) are disclosed: wherein R4 is an alkenyl group of defined structure. The compounds inhibit gamma-secretase, and hence are useful for treatment of Alzheimer's disease.
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
Improved Bimetallic Cobalt–Manganese Catalysts for Selective Oxidative Cleavage of Morpholine Derivatives
作者:David K. Leonard、Wu Li、Kathrin Junge、Matthias Beller
DOI:10.1021/acscatal.9b03476
日期:2019.12.6
site-selective scission of C(sp3)–C(sp3) bonds remain scarcely explored in contrast to the vast literature on C–C coupling. In view of this, we report a means of oxidative C–C single-bond cleavage in morpholines, made possible by a synergy between cobalt and manganese catalysts usingair as a benign oxidant. We demonstrate the synthetic utility of this system with the late-stage oxidative cleavage of Linezolid