Reactivity in [4+2] cycloadditions of new 4-trifluoromethyl-1,3-oxazin-6-ones: Access to functionalized 2-trifluoromethyl pyridines
摘要:
Recently discovered 4-trifluoromethyl-1,3-oxazin-6-ones react with electron-poor dienophiles as 2-aza-1,3-dienes in Diels-Alder cycloadditions to give new 2-trifluoromethyl pyridines (3a-d, 4a-c). Regioselectivity is excellent in the case of unsymmetrical dienophiles. These new pyridines permit further useful transformations.
Pyridine based compounds useful as intermediates for pharmaceutical or agricultural end-products
申请人:Fisher Raymond
公开号:US20090137558A1
公开(公告)日:2009-05-28
The present invention relates to substituted pyridine compounds of Formula (I) and derivatives thereof, and to a process for preparing these substituted pyridines. The invention also relates to the use of the substituted pyridines as intermediates in the production of pharmaceutical, chemical and agro-chemical products.
PYRIDINE BASED COMPOUNDS USEFUL AS INTERMEDIATES FOR PHARMACEUTICAL OR AGRICULTURAL END-PRODUCTS
申请人:Peakdale Molecular Limited
公开号:EP1824828A2
公开(公告)日:2007-08-29
[EN] COMPOUNDS<br/>[FR] COMPOSES
申请人:PEAKDALE MOLECULAR LTD
公开号:WO2006059103A2
公开(公告)日:2006-06-08
[EN] The present invention relates to substituted pyridine compounds of Formula (I) and derivatives thereof, and to a process for preparing these substituted pyridines. The invention also relates to the use of the substituted pyridines as intermediates in the production of pharmaceutical, chemical and agro-chemical products. [FR] Cette invention concerne des composés de pyridine substitués représentés par la formule (I) et des dérivés de ces composés, ainsi qu'un procédé pour préparer ces pyridines substituées. Cette invention concerne également l'utilisation de ces pyridines substituées comme intermédiaires dans la fabrication de produits pharmaceutiques, chimiques et agrochimiques.
WO2006/59103
申请人:——
公开号:——
公开(公告)日:——
Reactivity in [4+2] cycloadditions of new 4-trifluoromethyl-1,3-oxazin-6-ones: Access to functionalized 2-trifluoromethyl pyridines
作者:Fran�ois Evariste、Zdenek Janousek、Christian Maliverney、Robert Mer�nyi、Heinz G. Viehe
DOI:10.1002/prac.19933350106
日期:——
Recently discovered 4-trifluoromethyl-1,3-oxazin-6-ones react with electron-poor dienophiles as 2-aza-1,3-dienes in Diels-Alder cycloadditions to give new 2-trifluoromethyl pyridines (3a-d, 4a-c). Regioselectivity is excellent in the case of unsymmetrical dienophiles. These new pyridines permit further useful transformations.