Approach to the Synthesis of Indoline Derivatives from Diaryliodonium Salts
摘要:
An effective method of constructing the indoline moiety via intramolecular nucleophilic ring closure of a diaryliodonium salt is described. Diacetoxyiodoarene compounds (1a-1e) were converted into intermediate Koser's reagent and coupled with arylstannanes (7-10) to form diaryliodonium salts (11a-14e). Indo line compounds with different N-protecting groups, 15, 16, 17, and 18, were synthesized in higher yields by treating salts (11a-14e) with Cs2CO3 and TEMPO. Regardless of the electronic environment of five para-substituted iodoarenes and the natures of four N-protected arylstannane groups, the conversion proceeded well to afford corresponding indolines in yields of 72-84 and 70-84%, respectively.
Iridium(III)-Catalyzed Direct C-7 Amination of Indolines with Organic Azides
作者:Kwangmin Shin、Sukbok Chang
DOI:10.1021/jo5018475
日期:2014.12.19
Iridium-catalyzed regioselective C-7 amination of indolines has been achieved with organic azides as a facile nitrogen source. The developed procedure is convenient to perform even at roomtemperature and applicable to a wide range of substrates with high catalytic activity. Various types of organic azides (sulfonyl, aryl, and alkyl derivatives) were all successfully reacted under the present conditions
An efficient method for C7‐position‐selective alkenylation of N‐substituted indolines with alkenes is reported. Various 7‐alkenylindolines were obtained in moderate to excellent yields in air in the presence of catalytic amounts of [Cp*IrCl2]2, AgOTf, and Cu(OAc)2. The protocol relies on the use of a carbonyl or carbamoyl group on the nitrogen atom of indoline as a directing group and is potentially
Expedient Synthesis of Pyrroloquinolinones by Rh-Catalyzed Annulation of <i>N</i>-Carbamoyl Indolines with Alkynes through a Directed C–H Functionalization/C–N Cleavage Sequence
作者:Xiao-Fei Yang、Xu-Hong Hu、Teck-Peng Loh
DOI:10.1021/acs.orglett.5b00355
日期:2015.3.20
functionalization of N-carbamoyl indolines with various internal alkynes has been developed. The reaction, which involves the sequential cleavage of the C–H bond of the indoline at the C7-position and the C–N bond of the urea motif, provides a divergent protocol to rapidly assemble fused-ring pyrroloquinolinone analogues by using a direct alkenylation/annulation strategy with high efficiency and selectivity
Rhodium(III)-Catalyzed Direct Regioselective Synthesis of 7-Substituted Indoles
作者:Zengqiang Song、Rajarshi Samanta、Andrey P. Antonchick
DOI:10.1021/ol402626t
日期:2013.11.15
An efficient, atom-economic one-pot method was developed for the preparation of 7-substituted indoles via rhodium(III)-catalyzed oxidative cross-coupling. Regioselective olefination of indoline derivatives followed by one-pot subsequent oxidation provided the desired products in good to excellent yields.
1,3-dihydroindol-2-one derivatives substituted in the 3-position by a
申请人:Sanofi
公开号:US05594023A1
公开(公告)日:1997-01-14
The present invention relates to compounds of formula (I) and salts thereof, where appropriate: ##STR1## These compounds have an affinity for the vasopressin and/or ocytocin receptors.