An efficient method for the dehydrogenative coupling of silanes with alcohols under photocatalysis was developed. The reaction proceeded in the presence of Ru(bpy)3Cl2 (0.5 mol%) under visible light irradiation in acetonitrile at room temperature. The developed methodology was also applicable for the synthesis of silanols using water as a coupling partner.
[EN] NOVEL COMPOUNDS ACTIVE AS MUSCARINIC RECEPTOR ANTAGONISTS<br/>[FR] NOUVEAUX COMPOSÉS ACTIFS COMME ANTAGONISTES DES RÉCEPTEURS MUSCARINIQUES
申请人:PFIZER LTD
公开号:WO2010007561A1
公开(公告)日:2010-01-21
The invention relates to compounds of formula (I), processes and intermediates for their preparation, their use as muscarinic antagonists and pharmaceutical compositions containing them.