反応 #653637

反応方程式

KBr

compound 11

2-(1′-Acetoxyethyl)-4,8-dihydrobenzo[1,2-b:4,5-b′]dithiophene-4,8-dione

→

Compound 15

収率 72.0%

2,7-Bis(1′-acetoxyethyl)-4,8-dihydrobenzo [1,2-b:4,5-b′]dithiophene-4,8-dione

収率 72.0%

溶媒

CHCl3

反応条件

実験手順

Compound 15 was prepared from 14 in an identical manner to that compound 11. Yield 72%; yellow solid; mp 180-182° C.; UV (CHCl3) λmax 245 (log ε 4.32); IR (KBr) 1640, 1720 (C═O) cm−1; 1H NMR (CDCl3) δ 1.58 (d, J=6.6 Hz, 3H, C-7-CHCH3), 1.67 (d, J=6.6 Hz, 3H, C-2-CHCH3), 2.12 (s, 6H, COCH3×2), 6.10-6.16 (q, J=6.6 Hz, 1H, C-2-CH), 6.50-6.56 (q, J=6.6 Hz, 1H, C-7-CH), 7.50 (s, 1H, H-3), 7.62 (s, 1H, H-6); 13C NMR (CDCl3): δ 21.0, 21.1, 21.3, 22.0 (CH3×4), 67.4, 67.8 (CH×2), 123.2 (C-3), 128.6 (C-6), 154.0 (C-7), 154.1 (C-2), 169.6, 169.7 (C-2-C═O, C-7-C═O), 174.3, 174.8 (C-4, C-8); MS m/z 392 (M+); Anal. (C18H16O6S2) C, H.

出典