1026262-77-0

Upstream product

• 1711-02-0 4-iodobenzoic acid chloride 
• 157756-27-9 5-<4'-<<<(1,1-dimethylethyl)dimethylsilyl>oxy>methyl><1,1'-biphenyl>-2-yl>-2-(triphenylmethyl)-1H-tetrazole 
• 135050-95-2 2'-<2-(triphenylmethyl)-1H-tetrazol-5-yl><1,1'-biphenyl>-4-methanol 
• 147283-96-3 4-(tert-butyldimethylsiloxymethyl)iodobenzene 
• 15290-29-6 4-(trimethylsilyl)benzoic acid 
• 6999-03-7 1-bromo-4-(trimethylsilyl)benzene 
• 18282-51-4 4-iodo-benzyl alcohol 
• 106-37-6 1.4-dibromobenzene 
• 619-58-9 4-iodobenzoic acid 
• 143722-28-5 5-(4'-Methanesulfonyloxymethyl-1,1'-biphenyl-2-yl)-2-triphenylmethyl-2H-tetrazole 

Downstream Products

• 150438-02-1 CI 996 
• 1027968-99-5 2-Propyl-3-[2'-(2H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-5-[2-(2,2,2-trifluoro-acetyl)-pyrrol-1-yl]-3H-imidazole-4-carboxylic acid ethyl ester 

Relevant academic research and scientific papers

Model reactions targeted at the synthesis of carbon-14 labeled CI-996, a potent antagonist of angiotensin II receptor (1)

A reaction sequence suitable for the preparation of an analog of 2-propyl-1-[[2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl]methyl-4-[2-(tr ifluoroacetyl)-1H-pyrrol-1-yl]-1H-imidazole-5-carboxylic acid, with 14C at the methylene bridge was developed. The would-be labeled fragment (12) was derived from 4-iodobenzenemethanol (6) which itself was constructed from 1,4-dibromobenzene by the application of silicon chemistry. Pd(o) catalyzed coupling of TBDMS protected 6 and a tetrazole borate 10 gave the compound 12 which upon further transformation to the mesylate 13, N-alkylated an imidazole to furnish target compound.