A novel and efficient one-pot synthesis of tetrazole -derivatives such as Irbesartan and its analogues has been described from the primary acid amide derivatives. Thus 2-alkyl-3-[ P-( O-amidophenyl)benzyl]-1,3-diazaspiro[4.4]non-1-en-4-one derivatives or 4-[α-(acylamino)cyclopentamidomethyl]-2′-carboxamidobi-phenyl derivatives were treated with tributyltin chloride and sodium azide in O-xylene in the
Process for Producing 2-(N-Butyl)-3-[[2'-(Tetrazol-5-Yl)Biphenyl-4-Yl]Methyl]-I,3-Diazaspiro[4,4] Non-1-En-4-One
申请人:Kishore Charugundla
公开号:US20080214830A1
公开(公告)日:2008-09-04
Disclosed herein a process for producing 2-(n-butyl)-3-[[2′-(tetrazol-5-yl)biphenyl-4-yl]methyl]-1,3-diazaspiro[4.4]non-1-en-4-one of formula (I) in pure form by using selective solvent system and cost efficient raw materials and reagents.
[EN] PROCESS FOR PRODUCING 2-(N-BUTYL)-3-[[2'-(TETRAZOL-5-YL)BIPHENYL- 4-YL]METHYL]-l,3-DIAZASPIRO[4.4] NON-1-EN-4-ONE<br/>[FR] PROCÉDÉ DE PRODUCTION DE 2-(N-BUTYL)-3-[[2'-(TÉTRAZOL-5-YL)BIPHÉNYL- 4-YL]MÉTHYL]-L,3-DIAZASPIRO[4.4] NON-1-EN-4-ONE
申请人:JUBILANT ORGANOSYS LTD
公开号:WO2007013101A1
公开(公告)日:2007-02-01
[EN] Disclosed herein a process for producing 2- (n-butyl) -3- [ [2' - (tetrazol-5-yl)biphenyl-4-yl]methyl] -1,3 -diazaspiro [4.4] non-l-en-4 -one of formula (I) in pure form by using selective solvent system and cost efficient raw materials and reagents. [FR] La présente invention concerne un procédé de production de 2- (n-butyl) -3- [ [2' - (tétrazol-5-yl)biphényl-4-yl]méthyl] -1,3 -diazaspiro [4.4] non-l-en-4 -one de formule (I) sous forme pure en utilisant un système de solvants sélectifs avec des matières premières et des réactifs économiquement rentables.