1: iPr2NH2, 2.5M n-BuLi / tetrahydrofuran; hexane / 1.) -78 deg C, 30 min, 2.) -50 deg C, 10 min, then 0 deg C, 45 min 2: AcOH, 1M HCl / tetrahydrofuran; H2O / 48 h / 50 - 55 °C View Scheme

1: N-Cyclohexyldiethylketimine in tetrahydrofuran T=80°C; 2: c-heptyl-Cl T=45 - 60°C; 36 h; 3: With acetic acid in water T=50°C; Further stages.;

Yield given. Multistep reaction;

(i) LDA, 1,10-phenanthroline, (ii) /BRN= 1737987/, (iii) oxalic acid; Multistep reaction;