Lawesson's reagent for direct thionation of hydroxamic acids: Substituent effects on LR reactivity
作者:Witold Przychodzeń
DOI:10.1002/hc.20259
日期:——
To explore the generality and scope of direct thionation of hydroxamicacids (HAs), the reaction of various structurally diverse HAs with Lawesson's reagent was investigated. The yield of thiohydroxamic acid (THAs) is poor when HAs possess bulky acyl and/or N-substituents, acidic α-hydrogen atoms, or an N-phenyl ring. THAs yields were correlated with Brown sigma parameter. The relative rates of two
Cp*Co(III)-Catalyzed Coupling of Benzamides with α,β-Unsaturated Carbonyl Compounds: Preparation of Aliphatic Ketones and Azepinones
作者:Paula G. Chirila、Joshua Adams、Amir Dirjal、Alex Hamilton、Christopher J. Whiteoak
DOI:10.1002/chem.201705785
日期:2018.3.7
substrates with α,β‐unsaturated ketones has been optimized, providing a facile route towards aliphatic ketone products. When employing α,β‐unsaturated aldehydes as coupling partners, under the optimized protocol, a cascade reaction forming azepinones has also been developed. Finally, DFT studies have demonstrated how stabilization of a metallo‐enol intermediate when employing α,β‐unsaturated ketones is
已对具有α,β-不饱和酮的苯甲酰胺底物的Cp * Co III催化的CH-H官能化进行了优化,从而提供了一条通往脂肪族酮产品的简便途径。当使用α,β-不饱和醛作为偶联伙伴时,在优化方案下,还形成了形成a庚酮的级联反应。最后,DFT研究表明,当使用α,β-不饱和酮时,金属烯醇中间体的稳定化是导致观察到的脂肪族酮产物而不是使用α,β-不饱和酯作为偶联伙伴的烯烃产物的驱动力。
HETEROARYL COMPOUNDS AS BTK INHIBITORS AND USES THEREOF
申请人:Merck Patent GmbH
公开号:US20160096834A1
公开(公告)日:2016-04-07
The present invention relates to imidazo pyridine compounds, and pharmaceutically acceptable compositions thereof, useful as BTK inhibitors.
本发明涉及咪唑吡啶化合物及其药学上可接受的组合物,用作BTK抑制剂。
HYDROXYALKYL STARCH DERIVATIVES AS REACTANTS FOR COUPLING TO THIOL GROUPS
申请人:FRESENIUS KABI DEUTSCHLAND GMBH
公开号:US20160311934A1
公开(公告)日:2016-10-27
The present invention relates to a hydroxyalkyl starch (HAS) derivative of formula (I) wherein F1 is a functional group comprising the group —NR′—, with R′ being H or alkyl; L is a spacer bridging F1 and S; wherein HAS′ is the remainder of the HAS molecule, R
b
and R
c
are —[(CR
1
R
2
)
m
O]
n
—H and are the same or different from each other; R
a
is —[(CR
1
R
2
)
m
O]
n
—H with HAS′ being the remainder of the hydroxyalkyl starch molecule, or R
a
is HAS″ with HAS′ and HAS″ together being the remainder of the hydroxyalkyl starch molecule; R
1
and R
2
are independently hydrogen or an alkyl group having from 1 to 4 carbon atoms, m is 2 to 4, wherein R
1
and R
2
are the same or different from each other in the m groups CR
1
R
2
; n is from 0 to 6.
with 1,2‐diphenyldiselane by robust ruthenium catalyst were achieved with ample scope under mild reaction conditions. This general approach offered a straightforward access to various functional group substituted diarylselenide containing compounds. The plausible mechanism was proposed after the detailed mechanistic studies.