HCID 135452396, compound → HCID 136380187, compound

Participants

Reaction Steps

A solution of 15 (0.190 g, 0.250 mmol) in CH2Cl2 (25 mL) was treated with pyridinium chlorochromate (216 mg, 1.00 mmol). The reaction mixture was stirred at room temperature and monitored by TLC. After 90 min, the reaction mixture was poured on to a silica column (poured in CHCl3) and eluted with CHCl3/methanol (95:5) affording a purple solid (156 mg, 83%): 1H NMR δ −2.63 (brs, 2H), 1.84 (s, 12H), 2.63 (s, 6H), 7.29 (s, 4H), 8.28 (d, J=8.4 Hz, 4H), 8.41 (d, J=8.4 Hz, 4H), 8.71-8.78 (m, 8H), 10.39 (s, 2H); LD-MS obsd 755.24, calcd 754.3308 (C52H42N4O2); λabs 422, 515, 549, 594, 649 nm.

Provenance & Evidence