Phosphoric Acid → HCID 86722238, compound

Participants

Reaction Steps

9A (3.5 g, 9.28 mmol) was added to MeCN (50 mL) and stirred at room temperature. To the mixture was added ZnCl2 (1.91 g, 13.93 mmol, 1.5 eq), followed by AcOH (50 mL) and H3PO4 (50 mL) The reaction mixture was heated to 80° C. and stirred overnight. After reaction completed, the mixture was cooled and poured into crushed ice under stirring, neutralized to pH=7˜8, extracted with ethyl acetate, dried and concentrated to give 2.4 g of product (9B).

Provenance & Evidence