2-Tolyl isocyanate → t-Butyl 3-methoxy-4-o-tolylureidophenylacetate

Participants

Reaction Steps

To a solution of t-butyl 4-amino-3-methoxyphenylacetate (0.024 g, 0.10 mmol) in methylene chloride (2.0 mL) was added o-tolyl isocyanate (15 μL, 0.12 mmol). The reaction was stirred for 2 h then concentrated to afford t-Butyl 3-methoxy-4-o-tolylureidophenylacetate (0.036 g, 97%) as a tan foam: 1H NMR (CDCl3, 300 MHz, ppm) 8.05 (d, 7.9 Hz, 1H), 7.55 (d, 7.9 Hz, 1H), 7.45-7.05 (m, 5H), 6.78 (m, 2H), 3.73 (s, 3H), 3.48 (s, 2H), 2.23 (s, 3H), 1.44 (s, 9H).

Provenance & Evidence