7-Nitrobenzo[d][1,3]dioxole-4-carboxylic acid → 7-Amino-1,3-dioxaindane-4-carboxylic acid

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Reaction Steps

8.05 g of 7-nitro-benzo[1,3]dioxole-4-carboxylic acid is reacted with hydrogen in 650 ml of ethanol with 800 mg of palladium/carbon catalyst under normal pressure at room temperature. It is filtered through diatomaceous earth and concentrated by evaporation in a vacuum. 6.82 g of 7-amino-benzo[1,3]dioxole-4-carboxylic acid is obtained as a brown solid, flash point 196-197° C.

Provenance & Evidence