Formation of N-Alkylpyrroles via Intermolecular Redox Amination
摘要:
A wide variety of aldehydes, ketones, and lactols undergo redox amination when allowed to react with 3-pyrroline in the presence of a mild Bronsted acid catalyst. This reaction utilizes the inherent reducing power of 3-pyrroline to perform the equivalent of a reductive amination to form alkyl pyrroles. In doing so, the reaction avoids stoichiometric reducing agents that are typically associated with reductive aminations. Moreover, the redox amination protocol allows access to alkyl. pyrroles that cannot be made via standard reductive amination.
DIARYLTRIAZOLMETHYLAMINE DERIVATIVES, PREPARATION AND THERAPEUTIC USE THEREOF
申请人:BARTH Francis
公开号:US20080293794A1
公开(公告)日:2008-11-27
The invention concerns compounds of formula (I):
Wherein X, R
1
, R
2
, R
3
and R
4
are as described herein. The invention also concerns a method for preparing same and the therapeutic use thereof.
Provided is an organic electroluminescence device in which a single or a plurality of thin organic layers including at least a light emitting layer are sandwiched between an anode and a cathode. At least one of the thin organic layers includes: (A) a perylene compound having at least one halogen atom in its molecule; and (B) a compound having a fused aromatic ring having a ring carbon atoms of 12 to 15. The organic EL device has a high luminous efficiency and a long lifetime and is capable of emitting light having a color range of from an orange color to a red color.
US7781471B2
申请人:——
公开号:US7781471B2
公开(公告)日:2010-08-24
Formation of <i>N</i>-Alkylpyrroles via Intermolecular Redox Amination
作者:Nirmal K. Pahadi、Miranda Paley、Ranjan Jana、Shelli R. Waetzig、Jon A. Tunge
DOI:10.1021/ja907357g
日期:2009.11.25
A wide variety of aldehydes, ketones, and lactols undergo redox amination when allowed to react with 3-pyrroline in the presence of a mild Bronsted acid catalyst. This reaction utilizes the inherent reducing power of 3-pyrroline to perform the equivalent of a reductive amination to form alkyl pyrroles. In doing so, the reaction avoids stoichiometric reducing agents that are typically associated with reductive aminations. Moreover, the redox amination protocol allows access to alkyl. pyrroles that cannot be made via standard reductive amination.