报道了一种用于活化的亚甲基物质的芳基化的通用的新氧化方法。在温和的反应条件下(室温至40°C),Cu(OTf)2介导功能化的芳基硼物种与各种稳定的sp 3-亲核试剂的选择性偶联。丙二酸叔丁酯和酰胺基酯可用作底物以生成四元中心。作为传统交叉偶联或S N Ar方案的补充,在卤素亲电试剂(包括芳基溴化物和碘化物)存在下,该转化过程具有化学选择性。带有酰胺基,磺酰基基和膦酰基基团的底物不适合在温和的Hurtley型条件下偶联,是合适的反应伙伴。
OXIDATIVE COUPLING OF ARYL BORON REAGENTS WITH SP3-CARBON NUCLEOPHILES, AND AMBIENT DECARBOXYLATIVE ARYLATION OF MALONATE HALF-ESTERS VIA OXIDATIVE CATALYSIS
申请人:The Governors of the University of Alberta
公开号:US20180186721A1
公开(公告)日:2018-07-05
Described herein are methods of oxidative coupling of aryl boron reagents with sp
3
-carbon nucleophiles, and ambient decarboxylative arylation of malonate half-esters via oxidative catalysis.
The present invention comprises compounds of Formula I.
wherein:
R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, and R
9
are defined in the specification.
The invention also comprises a method of treating or ameliorating a syndrome, disorder or disease, wherein said syndrome, disorder or disease is rheumatoid arthritis or psoriasis. The invention also comprises a method of modulating RORγt activity in a mammal by administration of a therapeutically effective amount of at least one compound of claim
1.
The present invention comprises compounds of Formula I.
wherein:
R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
8
, and R
9
are defined in the specification.
The invention also comprises a method of treating or ameliorating a syndrome, disorder or disease, wherein said syndrome, disorder or disease is rheumatoid arthritis or psoriasis. The invention also comprises a method of modulating RORγt activity in a mammal by administration of a therapeutically effective amount of at least one compound of claim
1.
The present invention comprises compounds of Formula I.
wherein:
R1, R2, R3, R4, R5, R6, R7, R8, and R9 are defined in the specification.
The invention also comprises a method of treating or ameliorating a syndrome, disorder or disease, wherein said syndrome, disorder or disease is rheumatoid arthritis or psoriasis. The invention also comprises a method of modulating RORγt activity in a mammal by administration of a therapeutically effective amount of at least one compound of claim 1.
Ag(I)/Lewis Acid Cooperatively Promoted Three-Component Coupling for Carbo-Heterofunctionalization of Alkenes
作者:Yigao Tao、Rong Hu、Xiaoming Jie、Weiping Su
DOI:10.1021/acscatal.2c04099
日期:2022.10.21
A silver oxidant/Lewis acid catalyst cooperatively promoted three-component carbo-heterofunctionalization of alkenes is reported. A broad range of nucleophiles, including H2O, alcohols, and anilines, can combine with a variety of 1,3-dicarbonyl compounds or analogues as radical precursors to realize difunctionalization of various styrene derivatives. Interestingly, mechanistic investigations demonstrate