Difluoroalkylation of alkenes promoted by noncovalent interaction: A general method for the synthesis of difluoro-contained dihydrobenzofurans and indolins
摘要:
We describe a mild and simple operation strategy for the direct difluoroalkylative cyclization of 2-allylphenols and 2-allylanilines promoted by non-covalent interaction between 1,4-dimethylpiperazine and difluoroalkyl iodide. This method provides a facile and useful access to a series of difluoroalkylated 2,3-dihydrobenzofurans and indolin derivatives have important applications in drug discovery and development. (C) 2020 Elsevier Ltd. All rights reserved.
Difluoroalkylation of alkenes promoted by noncovalent interaction: A general method for the synthesis of difluoro-contained dihydrobenzofurans and indolins
摘要:
We describe a mild and simple operation strategy for the direct difluoroalkylative cyclization of 2-allylphenols and 2-allylanilines promoted by non-covalent interaction between 1,4-dimethylpiperazine and difluoroalkyl iodide. This method provides a facile and useful access to a series of difluoroalkylated 2,3-dihydrobenzofurans and indolin derivatives have important applications in drug discovery and development. (C) 2020 Elsevier Ltd. All rights reserved.
The invention is concerned with novel N-(4-carbamimidoyl-phenyl)-glycine derivatives of the formula:
1
wherein R
1
, E, X
1
to X
4
and G
1
and G
2
are as defined in the description and the claims, as well as hydrates or solvates and physiologically usable salts thereof.
Visible light promoted fluoroalkylation of alkenes and alkynes using 2-bromophenol as a catalyst
作者:Erlin Zhu、Xiao-Xiao Liu、An-Jun Wang、Ting Mao、Liang Zhao、Xingang Zhang、Chun-Yang He
DOI:10.1039/c9cc06587c
日期:——
A simple, mild and efficient approach for the fluoroalkylation of alkenes and alkynes using 2-bromophenol as a catalyst is presented.
使用2-溴苯酚作为催化剂,提出了一种简单、温和和高效的方法,用于烯烃和炔烃的氟烷基化。
N- (4-carbamimidoyl-phenyl) -glycine derivatives
申请人:——
公开号:US20030083504A1
公开(公告)日:2003-05-01
The invention is concerned with novel N-(4-carbamimidoyl-phenyl)-glycine derivatives of the formula:
1
wherein R
1
, E, X
1
to X
4
and G
1
and G
2
are as defined in the description and the claims, as well as hydrates or solvates and physiologically usable salts thereof.
A process for making an alkali metal alkoxide (e.g. sodium alkoxide) of a halogen-substituted alcohol (e.g. fluorine-substituted alcohols) by dispersing an alkali metal (e.g. sodium) in a cycloalkane (e.g. cyclohexane) or a cycloalkane containing a phenol (e.g., o-allylphenol) and adding the resultant dispersion to an ether (e.g. THF) solution of a halogen-substituted alcohol. The resultant alkali metal haloalkoxide solution, or alkali metal haloalkoxide solution containing phenoxides, can be reacted with a phosphotnitrilic chloride polymer to introduce haloalkoxide substituents or haloalkoxide and phenoxide substituents.
light-mediated cyclization reaction initiated by an atomtransferradicaladdition (ATRA) of haloalkanes onto alkenes was exploited for the synthesis of functionalized dihydrobenzofurans. Initial investigation indicated that the dimeric gold catalyst [Au2(μ-dppm)2Cl2] can effectively be used for intermolecular ATRA reactions. Further, the reactivity was applied in a cascade-like cyclization for the preparation