To a suspension of 94 (132 mg, 0.33 mmol) in EtOH (7 ml) and water (3 ml) was added ammonium chloride (16 mg, 0.9 eq, 0.3 mmol) and Fe (157 mg, 8.5 eq, 0.28 mmol) and the reaction mixture was heated to reflux for 2 hours. The reaction mixture was cooled to RT, filtered through celite then concentrated. The mixture was partitioned between DCM/water and the DCM was collected, dried over anhydrous sodium sulfate, filtered and concentrated. Crude 95 was used directly in the next step (122 mg, 100% yield). MS (m/z): 371.1 (M+H).
