Trifluoroacetic acid → Methyl 2-tritylsulfanylacetate

Participants

Reaction Steps

To a mixture of methyl mercaptoacetate (5.30 g, 50 mmol) and triphenylmethanol (13.0 g, 50 mmol) in chloroform (20 mL) was added trifloroacetic acid (5 mL) in 5 min. After stirring at room temperature for 1 h, the volatiles were removed in vacuo. The crude product was purified by recrystallization (dichloromethane/Hexane=1/2) to provide Tritylsulfanyl-acetic acid methyl ester (15.9 g, 91%). 1H NMR (300 MHz, CDCl3) δ 7.44-7.38 (m, 6H), 7.34-7.18 (m, 9H), 3.58 (s, 3H), 2.98 (s, 2H).

Provenance & Evidence