1: n-BuLi / 1) hexane, THF, -50 deg C, then 45 min to room temp.; 2) -20 deg C, then 60 min to room temp., then 4 h room temp. 2: 88 percent / 2 h / 80 °C View Scheme
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N-ethyl-N,N-diisopropylamine in N,N-dimethyl-formamide T=20°C; 3.08333 h;
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