反应详情

To a well-stirred suspension of 24 (1.3 g, 10 mmol) and CSA (116 mg, 0.50 mmol) in dry DCM (10 ml) was slowly added a solution of mercaptoacetic acid (2.76 g, 2.08 ml, 30 mmol) in dry DCM (5 ml). The reaction was left at room temperature for 16 hours with stirring. The reaction mixture was diluted with DCM (20 ml) and successively washed with: concentrated NaHCO3 (3×30 ml) and brine (2×30 ml), dried, filtered and evaporated to afford 25 (0.9 g, 4.4 mmol, 44%) as a colorless syrup.

1. washsuccessively washed with: concentrated NaHCO3 (3×30 ml) and brine (2×30 ml)
2. customdried
3. filtrationfiltered
4. customevaporated