反应详情

Analogously to the procedure of example 41A, 10.0 g (28.4 mmol) of the compound from example 26A are nitrated in 160 ml of trifluoroacetic acid and 40 ml of 70% strength nitric acid. The product is purified by silica gel chromatography using toluene and ethyl acetate in a gradient system.

1. customThe product is purified by silica gel chromatography