Benzo[b]furan-2-boronic acid → HCID 86680682, compound

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Reaction Steps

This compound was prepared from tert-butyl 5-((diphenoxyphosphoryl)oxy)-2H-1,4-oxazine-4(3H)-carboxylate and benzofuran-2-ylboronic acid using a procedure similar to that described in Example 2 (Steps 1-3a) above. The product was isolated as a yellow solid (58% yield); 1H-NMR (d6-DMSO) 1.08 (9H, s), 3.70 (2H, m), 4.18 (3H, m), 6.68 (1H, s), 6.77 (1H, s), 7.18-7.25 (2H, m), 7.48-7.56 (2H, m); 13C-NMR (CDCl3) 27.7, 41.3, 67.2, 100.7, 110.6, 120.4, 122.8, 123.4, 134.2; MS ES(+) 246.1 (M+-tBu); Anal. Calcd for C17H19NO4: C, 67.76; H, 6.35; N, 4.65. Found: C, 67.34; H, 6.38; N, 4.68. IR λmax=1690 cm−1.

Provenance & Evidence