Acetic Anhydride → HCID 18923997, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 0.88 g of product from Example 393, 5.0 ml of acetic anhydride and 2.0 ml of lutidine is heated at 110°-115° C. for 2.5 hours, followed by increasing the temperature to 150° C. and then heated for 3 hours. The reaction mixture is diluted with ethyl acetate, washed 2× with 1N hydrochloric acid, water, saturated sodium chloride, dried and concentrated in vacuo. The residue is dissolved in methylene chloride, filtered through a pad of hydrous magnesium silicate and reconcentrated in vacuo to give 0.569 g of the desired product.

Provenance & Evidence