Preparation of 4-nitrobenzyl...

Details Preparation of 4-nitrobenzyl... Preparation of 4-nitrobenzyl...

C - Chemistry, Metallurgy

07

F

260/446.5

C07F 7/10 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2021253

1/DAM1 17887 TITLE OF THE INVENTION A NOVEL PROCESS FOR THE PREPARATION OF 2-DIAZO-3- TRISUBSTITUTED SILYLOXY-3-BUTENOATES ABSTRACT OF THE DISCLOSURE A novel process for preparing 2-diazo-3-trisubstituted silyloxy-3-butenoates, synthons useful in the conversion of 3-substituted- 4-acetoxy azetidinones and penicillin to thienamycin, is provided, comprising the reaction of the appropriate diazo acetoacetate with the substituted silane, base and salt.

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