zinc(II) chloride in acetic acid 2 h; Heating;

zinc(II) chloride

1: SOCl2, dimethyl formamide / benzene / 2 h 2: 18.5 g / diethyl ether / 1 h / 0 °C 3: 1.) TMEDA, triphenylmethyl chloride, sec-BuLi / 1.) ether, cyclohexane, -78 deg C, 1 h, 2.) a) -78 deg C, 1 h, b) room temp., 3 h 4: 93 percent / Zn, pyridine, 10percent KOH / Heating; overnight 5: 89 percent / ZnCl2 / acetic acid / 2 h / Heating View Scheme

1: 93 percent / Zn, pyridine, 10percent KOH / Heating; overnight 2: 89 percent / ZnCl2 / acetic acid / 2 h / Heating View Scheme

1: 1.) TMEDA, triphenylmethyl chloride, sec-BuLi / 1.) ether, cyclohexane, -78 deg C, 1 h, 2.) a) -78 deg C, 1 h, b) room temp., 3 h 2: 93 percent / Zn, pyridine, 10percent KOH / Heating; overnight 3: 89 percent / ZnCl2 / acetic acid / 2 h / Heating View Scheme

1: 18.5 g / diethyl ether / 1 h / 0 °C 2: 1.) TMEDA, triphenylmethyl chloride, sec-BuLi / 1.) ether, cyclohexane, -78 deg C, 1 h, 2.) a) -78 deg C, 1 h, b) room temp., 3 h 3: 93 percent / Zn, pyridine, 10percent KOH / Heating; overnight 4: 89 percent / ZnCl2 / acetic acid / 2 h / Heating View Scheme

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sodium hydroxide; zinc in 1,4-dioxane; water Heating;