A Convenient Synthesis of 3-Substituted 1H-Indoles
摘要:
A convenient synthesis of 3-substituted IH-indoles via functionalization of enamines, which serve as intermediates in the Leimgruber-Batcho approach, followed by reductive cyclization is described.
The present invention provides compounds of formula M-L-M' (where M and M' are each independently a monomeric moiety of Formula (I) and L is a linker). The dimeric compounds have been found to be effective in promoting apoptosis in rapidly dividing cells. (I)
A consecutive 2-step synthesis of N-unprotected polysubstituted indoles bearing an electron-withdrawing group at the C-3 position from readily available nitroarenes is reported. The protocol is based on the [3,3]-sigmatropic rearrangement of N-oxyenamines generated by the DABCO-catalyzed reaction of N-arylhydroxylamines and conjugated terminal alkynes, and delivers indoles endowed with a wide array
Catalytic Enantioselective Meerwein−Eschenmoser Claisen Rearrangement: Asymmetric Synthesis of Allyl Oxindoles
作者:Elizabeth C. Linton、Marisa C. Kozlowski
DOI:10.1021/ja807026z
日期:2008.12.3
The first catalytic, enantioselective Meerwein-Eschenmoser Claisenrearrangement has been achieved. Palladium(II) BINAP or phosphinooxazoline catalysts were employed to generate oxindole products with 100% conversion and up to 92% ee.
第一个催化、对映选择性 Meerwein-Eschenmoser Claisen 重排已经实现。钯 (II) BINAP 或膦基恶唑啉催化剂用于生成 100% 转化率和高达 92% ee 的羟吲哚产品。
DIMERIC IAP INHIBITORS
申请人:Chen Zhuoliang
公开号:US20130309247A1
公开(公告)日:2013-11-21
The present invention provides compounds of formula M-L-M′ (where M and M′ are each independently a monomeric moiety of Formula (I) and L is a linker). The dimeric compounds have been found to be effective in promoting apoptosis in rapidly dividing cells. (I)
Copper(II)- and Palladium(II)-Catalyzed Enantioselective Claisen Rearrangement of Allyloxy- and Propargyloxy-Indoles to Quaternary Oxindoles and Spirocyclic Lactones
作者:Trung Cao、Elizabeth C. Linton、Joshua Deitch、Simon Berritt、Marisa C. Kozlowski
DOI:10.1021/jo302039n
日期:2012.12.21
In this Article, a strategy to obtain highly enantio-selective catalysts for the Claisen rearrangement of allyloxy- and propargyloxy-indoles is outlined. Ultimately, copper BOX and palladium BINAP or PHOX catalysts were discovered as superior in catalyzing Claisen rearrangements of allyloxy- or proparyloxy-substituted indoles to generate oxindoles bearing allyl- or allenyl-substituted quaternary centers. This method proved to be tolerant of a broad range of functional groups. Tandem reactions of the silyl-allene products provide rapid access to a variety of spirocyclic oxindoles in one operation.