Formaldehyde → HCID 18630142, compound

Participants

Reaction Steps

To a solution of the compound of Example 217 (0.29 g, 1.2 mmol) and benzotriazole (0.143 g, 1.2 mmol) in absolute ethanol (5 mL) at RT was added 37% aq formaldehyde (0.090 mL, 1.2 mmol). An aliquot was induced to precipitate by cooling and addition of a small amount of water. The precipitate was added back into the reaction which was stirred at RT overnight and cooled in a refrigerator for 6 h. The resultant mixture was filtered and dried under vacuum (P2O5) to afford 5-[(1H-benzotriazol-1-ylmethyl)amino]-N-ethyl-2-(trimethylsilyl)benzamide as a white solid (0.308 g, 70%). m.p. 207-208° C.

Provenance & Evidence