反应详情

A stirred solution of 3b (0.896 mmol) in xylene (6.00 mL) was heated to 110° C. for approximately 1 h. After cooling to rt, the reaction mixture was concentrated in vacuo to afford the title compound 3c, which was used without further purification in the subsequent reaction. m/z (ES) 473 (MH)+.

1. concentrationthe reaction mixture was concentrated in vacuo