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] QUINOLIN-2-ONE DERIVATIVES<br/>[FR] DÉRIVÉS DE QUINOLIN-2-ONE
申请人:MERCK PATENT GMBH
公开号:WO2017121444A1
公开(公告)日:2017-07-20
Compounds of the formula (I) in which X1, X2, X3, X4, R1, R2, R3, Q and Y have the meanings indicated in Claim 1, are inhibitors of c-Kit kinase, and can be employed for the treatment of cancer.
By using cheap and innocuous sodiumchlorite, a series of tertiary amines have been oxidized to the corresponding lactams with good selectivity and high yield. In this method, neither transition-metal catalyst nor oxidant was used. In the oxidation step, the pH of the sodiumchlorite was precisely adjusted to pH around 6 using CO2, such pH is a compromise between oxidative properties, chemical stability
通过使用廉价、无害的亚氯酸钠,一系列叔胺被氧化成相应的内酰胺,具有良好的选择性和高收率。在该方法中,既不使用过渡金属催化剂,也不使用氧化剂。在氧化步骤中,使用 CO 2将亚氯酸钠的 pH 值精确调节到 6 左右,这样的 pH 值是氧化特性、化学稳定性和不需要的沉淀之间的折衷。此外,缓冲盐不是必需的,这使得这种氧化反应可以在安全和环境友好的条件下进行。
Aralkyl and aralkylidene heterocyclic lactam and imides
申请人:Howard R. Harry
公开号:US20050227980A1
公开(公告)日:2005-10-13
The present invention relates to compounds of the formula I
wherein R
1
, R
2
, R
3
, X, Y and the dashed line are as defined in the specification, to intermediates for their preparation, to pharmaceutical compositions containing them and to their medicinal use as psychotherapeutic agents.