吲哚-2-羧酸衍生物对钯的钯催化环化反应:通过Ar–I反应性或CH–H官能化合成Indolo [2,3 - c ] pyrane -1- one
摘要:
提出了两种方法,一种涉及Ar–I反应性,另一种通过CH–H官能化,用于通过相应的烯键形成吲哚[2,3 - c ]吡喃-1-酮。描述了通过Pd催化的烯丙基与3-碘-1-烷基吲哚-2-羧酸的区域选择性环化制备吲哚并[2,3 - c ]吡喃-1-酮衍生物的高效方法。该方法对于广泛范围的丙二烯是相当普遍的,它们以良好或优异的产率提供了各自的吲哚并[2,3 - c ]吡喃-1-酮。此外,Pd(II)催化吲哚-2-羧酸衍生物与丙二烯的氧化偶合,可通过直接的C–H功能化得到相应的吲哚[2,3- c]。已经开发了中等至良好产率的]吡喃-1-酮。
[EN] PYRAZOLE COMPOUNDS AS CRTH2 ANTAGONISTS<br/>[FR] COMPOSÉS DE PYRAZOLE EN TANT QU'ANTAGONISTES DE CRTH2
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2012101043A1
公开(公告)日:2012-08-02
The present invention relates to pyrazole compounds of formula (1a) or (1b) and pharmaceutically acceptable salts thereof, wherein Ra, Rb, Rc, Rd, Y1, y2, y3, y4, y5, Z, R1, R2, n and R3 have one of the meanings as indicated in the specification and claims, to their use as medicaments, to pharmaceutical formulation containing said compounds and to pharmaceutical formulations said compounds in combination with one or more active substances. The compounds have CRTH2 antagonistic activity.
Pyrazole compounds of formula (Ia) or (Ib) and pharmaceutically acceptable salts thereof,
wherein R
a
, R
b
, R
c
, R
d
, Y
1
, Y
2
, Y
3
, Y
4
, Y
5
, Z, R
1
, R
2
, n and R
3
have one of the meanings as indicated in the specification and claims, to their use as medicaments, to pharmaceutical formulations containing the compounds and to pharmaceutical formulations containing the compounds in combination with one or more active substances.
Palladium-catalysed decarboxylative nitrile insertion via C–H activation or self-coupling of indole-2-carboxylic acids: a new route to indolocarbolines and triindoles
作者:R. N. Prasad Tulichala、K. C. Kumara Swamy
DOI:10.1039/c5cc03160e
日期:——
Palladium catalysed-reaction of indole carboxylic acids with nitriles in the presence of Ag2CO3 proceeds via decarboxylative dual C-H activation leading to the nitrile insertion products, triazaindeno-fluorenes (indolocarbolines); in the absence...
Pd(OAc)<sub>2</sub>-catalyzed dehydrogenative C–H activation: An expedient synthesis of uracil-annulated β-carbolinones
作者:Biplab Mondal、Somjit Hazra、Tarun K Panda、Brindaban Roy
DOI:10.3762/bjoc.11.146
日期:——
An intramolecular dehydrogenative C–H activation enabled an efficient synthesis of an uracil-annulated β-carbolinone ring system. The reaction is simple, efficient and high yielding (85–92%).