反应详情

In a 100 mL round bottom flask, a solution of EXAMPLE 1C (4.25 g, 21.84 mmol), 1,1-di-tert-butoxy-N,N-dimethylmethanamine (28.8 mL, 120 mmol), and N-methyl-2-pyrrolidinone (15 mL) was heated at 85° C. for 2 hours. The reaction was concentrated under high vacuum on a rotavap at 60° C. The residual solid was triturated with 5 mL ether, filtered and dried to provide the title compound. MS (ES r) m/e 249.8 (M+H)+.

1. concentrationThe reaction was concentrated under high vacuum on a rotavap at 60° C
2. customThe residual solid was triturated with 5 mL ether
3. filtrationfiltered
4. customdried