N-(4-Chloro-3-hydroxymethyl-benzyl)-propionamide → N-(4-chloro-3-formylbenzyl)propionamide

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Reaction Steps

MnO2 (5.61 g, 65.7 mmol) was added to a sol. of N-(4-chloro-3-hydroxymethyl-benzyl)-propionamide (2.99 g, 13.1 mmol) in CH3CN (255 mL) at rt. The mixture was stirred for 3 h at rt, and MnO2 (2.24 g, 26.2 mmol) was added again. The mixture was stirred for 1 h at rt, and the mixture was filtered through celite. The filtrate was evaporated under reduced pressure, and the residue was dried under high vacuum to yield the crude title compound (2.74 g, 93%) that was used further without purification. LC-MS: tR=0.76 min; ES+: 267.27.

Provenance & Evidence