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
Combination of MTP inhibitors or apoB-secretion inhibitors with fibrates for use as pharmaceuticals
申请人:Boehringer Ingelheim Pharma KG
公开号:US20030162788A1
公开(公告)日:2003-08-28
The invention relates to the use of fibrates for lowering the liver toxicity of MTP inhibitors as well as pharmaceutical compositions containing an MTP inhibitor and a fibrate.
Heteroarylcarboxylic acid amides, the preparation thereof and their use as pharmaceutical compositions
申请人:Boehringer Ingelheim Pharma KG
公开号:US20030073836A1
公开(公告)日:2003-04-17
A compound of formula
1
wherein: A
a
, R
a
, X
1
to X
4
, Het, and R
5
to R
7
are defined as in claim 1, the isomers and the salts thereof, particularly the physiologically acceptable salts thereof, which are valuable inhibitors of the microsomal triglyceride-transfer protein (MTP), medicaments containing these compounds and their use, as well as the preparation thereof.
High yields of meta-substituted amination products in the SNAr substitution of benzenes
作者:George R Brown、Alan J Foubister、Paul D Ratcliffe
DOI:10.1016/s0040-4039(98)02570-2
日期:1999.2
Morpholine substitution in fluorobenzenes containing a meta-substituted electron withdrawing group proceeds in DMSO at 100 °C over 60 h to give meta-substitution products (by fluoride ion displacement) in pure isolated yields of 19–98%.
Synthesis of Meta-substituted aniline derivatives by nucleophilic substitution
作者:Andrew J Belfield、George R Brown、Alan J Foubister、Paul D Ratcliffe
DOI:10.1016/s0040-4020(99)00818-2
日期:1999.11
Substitution by amines of fluorobenzenes containing a meta-substituted electron withdrawing group (EWG), in DMSO at 100 °C over 60 h gave meta-substituted anilinederivatives in isolated yields of up to 98%. The scope of the reaction is explored in terms of reaction conditions and substrates. It is postulated that facile meta-substitutions are facilitated through field stabilisation of the intermediate