Process for the preparation of naphthalen-2-yl-pyrazol-3-one intermediates useful in the synthesis of sigma receptor inhibitors
申请人:Laboratorios Del. Dr. Esteve, S.A.
公开号:EP2112139A1
公开(公告)日:2009-10-28
The invention relates to a process for preparing naphthalen-2-yl-pyrazol-3-one intermediates, tautomers, and salts thereof, to novel intermediates, and to the use of the intermediates in the preparation of sigma receptor inhibitors.
PROCESS FOR THE PREPARATION OF NAPHTHALEN-2-YL-PYRAZOL-3-ONE INTERMEDIATES USEFUL IN THE SYNTHESIS OF SIGMA RECEPTOR INHIBITORS
申请人:Laboratorios del Dr. Esteve S.A.
公开号:EP2279175B1
公开(公告)日:2015-05-13
US8329880B2
申请人:——
公开号:US8329880B2
公开(公告)日:2012-12-11
α-Hydroxy Cyclopentenones from α-Diketones
作者:William A. Batson、Divakaramenon Sethumadhavan、Marcus A. Tius
DOI:10.1021/ol050970x
日期:2005.6.1
[reaction: see text] Metalloenolates derived from alpha,beta-unsaturated alpha-diketones undergo cyclization to alpha-hydroxy cyclopentenones. This is apparently the first reported Nazarov reaction that takes place in the presence of base.