Acetyl chloride → 3-Trimethylsilyoxy-2-aza-1,3-butadiene

Participants

Reaction Steps

In a manner similar to the method described in example 1b, 2-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-5-chloro-benzaldehyde (5.2 g, 17 mmol) prepared in example 131a was reacted with 1,1,1,3,3,3-hexamethyldisilazane (2.4 g, 15 mmol), n-butyllithium (2.5 M, 6 mL, 15 mmol), trimethylsilyl chloride (1.6 g, 15 mmol), triethylamine (1.6 g, 20 mmol) and acetyl chloride (1.5 g, 20 mmol) to give 1-[2-(tert-butyl-dimethyl-silanyloxy)-ethoxy]-5-chloro-phenyl]-3-trimethylsilyoxy-2-aza-1,3-butadiene as yellow oil and used for the next step without further purification.

Provenance & Evidence