Multi-gram scale mercury-free synthesis of optically pure 3,4,5-trisubstituted 1,2,4-triazoles using silver benzoate
摘要:
We report a new method using silver benzoate instead of mercury salts as a key reagent for the synthesis of 3,4,5-trisubstituted 1,2,4-triazoles. This method allows the introduction of a large variety of substituents in the three positions. We demonstrated that we could introduce one chiral center without any loss of the optical purity. This method is compatible with at least multi-gram scale-up. (C) 2010 Elsevier Ltd. All rights reserved.
Multi-gram scale mercury-free synthesis of optically pure 3,4,5-trisubstituted 1,2,4-triazoles using silver benzoate
摘要:
We report a new method using silver benzoate instead of mercury salts as a key reagent for the synthesis of 3,4,5-trisubstituted 1,2,4-triazoles. This method allows the introduction of a large variety of substituents in the three positions. We demonstrated that we could introduce one chiral center without any loss of the optical purity. This method is compatible with at least multi-gram scale-up. (C) 2010 Elsevier Ltd. All rights reserved.
[EN] NOVEL 1,2,4-TRIAZOLE DERIVATIVES AND PROCESS OF MANUFACTURING THEREOF<br/>[FR] NOUVEAUX DÉRIVÉS DE 1,2,4-TRIAZOLE ET LEUR PROCÉDÉ DE FABRICATION
申请人:AETERNA ZENTARIS GMBH
公开号:WO2009115503A1
公开(公告)日:2009-09-24
The invention discloses a process of manufacturing 1,2,4-triazole derivatives comprising steps (a) to (e). The invention further discloses novel 1,2,4-triazole derivatives and their use as medicaments.
Multi-gram scale mercury-free synthesis of optically pure 3,4,5-trisubstituted 1,2,4-triazoles using silver benzoate
We report a new method using silver benzoate instead of mercury salts as a key reagent for the synthesis of 3,4,5-trisubstituted 1,2,4-triazoles. This method allows the introduction of a large variety of substituents in the three positions. We demonstrated that we could introduce one chiral center without any loss of the optical purity. This method is compatible with at least multi-gram scale-up. (C) 2010 Elsevier Ltd. All rights reserved.