4-(4-(3-Cyano-4-(ethylsulfonyl)phenylamino)-4-oxobutyl)phenylboronic acid → 4-(2-(3-Cyano-4-(ethylsulfonyl)phenylcarbamoyloxy)ethyl)-3-methylphenylboronic acid

Participants

Reaction Steps

Using a procedure analogous to that used to prepare 6D, 31A (745 mg, 1.66 mmol) was reacted with 5,5′,5′-tetramethyl-[2,2′]bi[[1,3,2]dioxaborinanyl] to give 31B (468 mg, 68%) as a tan foam. 1H NMR (400 MHz, MeOD) δ ppm 1.25 (t, J=7.33 Hz, 3 H) 2.34-2.40 (m, 3 H) 3.03 (t, J=6.95 Hz, 2 H) 3.35 (q, J=7.33 Hz, 2 H) 4.39 (t, J=7.07 Hz, 2 H) 7.20 (d, J=7.33 Hz, 1 H) 7.30-7.43 (m, 2 H) 7.86 (dd, J=8.84, 1.77 Hz, 1 H) 7.99 (d, J=8.84 Hz, 1 H) 8.11 (d, J=2.02 Hz, 1 H) 10.05 (s, 1 H).

Provenance & Evidence