“…Product 1c was identified by comparison with the NMR data of pure compound 2c obtained later. Compound 1c: 1 H NMR (400 Mhz, CDCl 3 ) δ: 7.35-7.15 (m, 15H, H ar ), 3.59 (s, 6H, H10), 3.42 (s, 6H, H2, H4, H6), 3.02 (t, 6H, J = 7.1 Hz, H8), 2.62 (t, 6H, J = 7.1 Hz, H7), 2.60 (s br, 3H, H9). 13 C NMR (101 MHz, CDCl 3 ) δ: 139.0 (C i ), 128.7 (C o ), 128.5 (C m ), 127.2 (C p ), 70.7 (C2, C4, C6), 58.0 (C10), 52.3 (C7), 45.4 (C8).…”