1,2 Disconnection

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  • Created by: S
  • Created on: 24-03-17 20:54
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  • 1,4-Functional disconnections
    • 1,4 dicarbonyl
      • Disconnection 2 - Acyl anion
        • Cyanide - KCN /HCM DMSO 80C
          • To convert to carbonyl add dil HCl and ROH
        • Nitro- RNO2 NaOH
          • To convert to carbonyl add TiCl3 ad H2O
      • Disconnection 1 - Cationic  synthon with a halide  Br2,AcOH
    • 1,4-hydroxyl carbonyl
      • If its a ketoester we can selectively reduce the ketone only using NaBH4 and MeOH
      • Diketone
        • Enolate opening of epoxide - I)NaOEt epoxide ii)HCl,H2O iii)-CO2
        • Difunctionalistion of acetylenes I)alkyne with nBuli and RCHO x2 ii) H2 Pd/C

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