3-(2-Nitro-benzoylamino)-thieno[2,3-c]pyrazole-1,5-dicarboxylic Acid 5-tert-butyl Ester 1-ethyl Ester → 3-(2-Amino-benzoylamino)-thieno[2,3-c]pyrazole-1,5-dicarboxylic Acid 5-tert-butyl Ester 1-ethyl Ester

Beteiligte Stoffe

Reaktionsschritte

The suspension of 3-(2-Nitro-benzoylamino)-thieno[2,3-c]pyrazole-1,5-dicarboxylic acid 5-tert-butyl ester 1-ethyl ester (984 mg, 2.136 mmol) and Pd/C 10% (200 mg) in ethyl acetate (AcOEt, 35 mL) was shaken under hydrogen pressure (40 psi) for 10 hours. The solid was filtered on celite, washed with AcOEt and the filtrate was evaporated under vacuum to yield 894 mg (97%) of title compound.

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