Propargylic Activation Across a Heterobimetallic Ir−Sn Catalyst: Nucleophilic Substitution and Indene Formation with Propargylic Alcohols
作者:Paresh Nath Chatterjee、Sujit Roy
DOI:10.1021/jo100189z
日期:2010.7.2
A nucleophilicsubstitution of propargylicalcohols with carbon (arene, heteroarene, and allyltrimethylsilane), sulfur (thiol), oxygen (alcohol), and nitrogen (sulfonamide) nucleophiles has been demonstrated using a high-valent [Ir(COD)(SnCl3)Cl(μ-Cl)]2 catalyst in 1,2-dichloroethane to afford the corresponding propargylic products in moderate to excellent yields. Alkyl or aryl substituted tertiary
SUBSTITUTED 1-AMINOPHTHALAZINE DERIVATIVES, PREPARATION THEREOF AND THERAPEUTIC APPLICATION THEREOF
申请人:AUGEREAU Jean Michel
公开号:US20090124624A1
公开(公告)日:2009-05-14
The invention concerns 1-amino-phthalazine derivatives of general formula (I):
Wherein A, B, L, R, R
1
, R
2
, R
3
, R
4
, R
5
and R
7
are as defined herein. The invention also concerns the preparation of said compounds and their therapeutic use.
Rh/Cu-catalyzed multiple C–H, C–C, and C–N bond cleavage: facile synthesis of pyrido[2,1-a]indoles from 1-(pyridin-2-yl)-1H-indoles and γ-substituted propargyl alcohols
The Rh/Cu-catalyzed synthesis of pyrido[2,1-a]indoles from 1-(pyridin-2-yl)-1H-indoles and γ-substituted propargyl alcohols involving multiple C–H, C–C, and C–N bond cleavage and construction is presented.
A CO<sub>2</sub>-induced ROCO<sub>2</sub>Na/ROCO<sub>2</sub>H buffer solution promoted the carboxylative cyclization of propargyl alcohol to synthesize cyclic carbonates
作者:Shaorui Yan、Ruinian Zhou、Feng Han、Mengmeng Feng、Chengxia Miao、Shuai Zhang、Shiyun Ai
DOI:10.1039/c9cy02311a
日期:——
propargyl alcohol to generate α-alkylene cyclic carbonates. The Introduction of CO2 into propargyl alcohol/sodium tertiary pentoxide system can provide ROCO2Na/ROCO2H buffer solution with both basic and acidic species. The basic and acidic species can simultaneously promote the generation of carbonate anion intermediate and the interaction between alkyne moieties of propargyl alcohol and H+ proton, facilitating
synthesis of 2-iodo-3-alkyl-1-arylbut-2-en-1-ones from propargylic alcohols that is enabled by N-iodosuccinimide. A variety of substituted propargylic alcohols are amenable to delivering the selective 2-iodoenone products in very good yields. The utility of the α-iodoenone derivatives is further extended by developing an efficient, novel, and new synthetic methodology for the synthesis of 3,5,6-trisubstituted