Thermocontrolled benzylimine–benzaldimine rearrangement over Nafion-H catalysts for efficient entry into α-trifluoromethylbenzylamines
摘要:
Nation-H and Nation SAC-13 are efficient solid Bronsted acid catalysts for the preparation of trifluoromethyl ketimines from benzylamines and trifluoromethylated ketones in high yields. A finely tuned benzylimine-benzaldimine rearrangement by facile 1,3-hydrogen shift has been achieved for the formation of fluorinated benzaldimines in high yields by careful optimization of reaction conditions including attempts under microwave conditions and a flow system. These alpha-trifluoromethylated benzaldimines are efficient precursors for pharmaceutically important alpha-trifluoromethylated benzylamines, accessed through their direct acid hydrolysis. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] SUBSTITUTED 1-OXO-ISOINDOLINE-5-CARBOXAMIDE COMPOUNDS, COMPOSITIONS THEREOF, AND METHODS OF TREATMENT THEREWITH<br/>[FR] COMPOSÉS DE 1-OXO-ISOINDOLINE-5-CARBOXAMIDE SUBSTITUÉS, COMPOSITIONS DE CEUX-CI, ET PROCÉDÉS DE TRAITEMENT ASSOCIÉS
申请人:CELGENE CORP
公开号:WO2020243379A1
公开(公告)日:2020-12-03
Provided herein are 1-oxo-isoindoline-5-carboxamide compounds having the following structure of Formula (I), wherein R1, R2, R3, R4 and n are as defined herein, compositions comprising an effective amount of a 1-oxo-isoindoline-5-carboxamide compound, and methods for treating or preventing disorders.
SUBSTITUTED 1-OXO-ISOINDOLINE-5-CARBOXAMIDE COMPOUNDS, COMPOSITIONS THEREOF, AND METHODS OF TREATMENT THEREWITH
申请人:Celgene Corporation
公开号:US20200377512A1
公开(公告)日:2020-12-03
Provided herein are 1-oxo-isoindoline-5-carboxamide compounds having the following structure:
wherein R
1
, R
2
, R
3
, R
4
and n are as defined herein, compositions comprising an effective amount of a 1-oxo-isoindoline-5-carboxamide compound, and methods for treating or preventing disorders.
Thermocontrolled benzylimine–benzaldimine rearrangement over Nafion-H catalysts for efficient entry into α-trifluoromethylbenzylamines
作者:G.K. Surya Prakash、Kevin E. Glinton、Chiradeep Panja、Laxman Gurung、Patrice T. Battamack、Béla Török、Thomas Mathew、George A. Olah
DOI:10.1016/j.tetlet.2011.11.088
日期:2012.2
Nation-H and Nation SAC-13 are efficient solid Bronsted acid catalysts for the preparation of trifluoromethyl ketimines from benzylamines and trifluoromethylated ketones in high yields. A finely tuned benzylimine-benzaldimine rearrangement by facile 1,3-hydrogen shift has been achieved for the formation of fluorinated benzaldimines in high yields by careful optimization of reaction conditions including attempts under microwave conditions and a flow system. These alpha-trifluoromethylated benzaldimines are efficient precursors for pharmaceutically important alpha-trifluoromethylated benzylamines, accessed through their direct acid hydrolysis. (C) 2011 Elsevier Ltd. All rights reserved.