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.
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.
Synthesis of 2,3-Dihydrobenzofurans via a Photochemical Gold-Mediated Atom Transfer Radical Addition Reaction
作者:Julian J. Melder、Sina Witzel、Sophia Terres、Philippe de Bary、Lukas Krohne、Matthias Rudolph、A. Stephen K. Hashmi
DOI:10.1021/acs.orglett.4c01626
日期:2024.7.12
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