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Is-5 Bu C02t-Bu C02Et Me—MgBr Hquench Me 1) NH20H 2) LiAlH4 1) 03 2) NaBH3CN Me C02Et CH2Br t-Buo CH2Br o o NaH or Ro- 1b C02H C02H CH20H Me EtOH LiAlH4 Hquench Me la NaH or

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Page 1: Is-5 Bu C02t-Bu C02Et Me—MgBr H*quench Me 1) NH20H 2) LiAlH4 1) 03 2) NaBH3CN Me C02Et CH2Br t-Buo CH2Br o o NaH or Ro- 1b C02H C02H CH20H Me EtOH LiAlH4 H*quench Me la NaH or

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Page 2: Is-5 Bu C02t-Bu C02Et Me—MgBr H*quench Me 1) NH20H 2) LiAlH4 1) 03 2) NaBH3CN Me C02Et CH2Br t-Buo CH2Br o o NaH or Ro- 1b C02H C02H CH20H Me EtOH LiAlH4 H*quench Me la NaH or

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Page 3: Is-5 Bu C02t-Bu C02Et Me—MgBr H*quench Me 1) NH20H 2) LiAlH4 1) 03 2) NaBH3CN Me C02Et CH2Br t-Buo CH2Br o o NaH or Ro- 1b C02H C02H CH20H Me EtOH LiAlH4 H*quench Me la NaH or

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