反応 #471180

反応方程式

water

1,6-hexanediol

potassium tert-butoxide

1-iodopropane

→

6-propyloxy-1-hexanol

収率 25.0%

溶媒

dichloromethane

反応条件

後処理

1. 1
   その他a 500-mL, one-necked, round-bottom flask equipped with a magnetic stirrer
2. 2
   workup.STIRRINGstirred overnight
3. 3
   その他The progress of reaction
4. 4
   workup.ADDITIONwas added to the reaction mixture
5. 5
   抽出extracted with ethyl acetate (2×100 mL)
6. 6
   濃縮The combined organic layers were concentrated in vacuo
7. 7
   その他to get the crude product
8. 8
   洗浄washed with water
9. 9
   乾燥brine, dried over sodium sulfate
10. 10
    濃縮The organic layer was concentrated in vacuo
11. 11
    その他to get the crude product
12. 12
    その他The crude product was purified by column chromatography
13. 13
    洗浄to elute the product from the column
14. 14
    workup.ADDITIONAll fractions containing the desired pure product
15. 15
    濃縮concentrated in vacuo

実験手順

a 500-mL, one-necked, round-bottom flask equipped with a magnetic stirrer was charged with 1,6-hexanediol (6.00 g), potassium tert-butoxide (5.413 g) at room temperature. The reaction mixture was stirred for one hour, and then 1-iodopropane (8.63 g) was added. The reaction mixture was heated to 70-80° C. and stirred overnight. The progress of reaction was monitored by TLC (Note 1). After completion of the reaction, water was added to the reaction mixture, and extracted with ethyl acetate (2×100 mL). The combined organic layers were concentrated in vacuo to get the crude product. The crude product was dissolved in dichloromethane and washed with water, and then brine, dried over sodium sulfate. The organic layer was concentrated in vacuo to get the crude product. The crude product was purified by column chromatography using 230-400 mesh silica gel. A solvent gradient of ethyl acetate in hexanes (10-45%) was used to elute the product from the column. All fractions containing the desired pure product were combined and concentrated in vacuo to give pure 6-propyloxy-1-hexanol (lot D-1029-048, 1.9 g, 25%) Completion of the reaction was monitored by thin layer chromatography (TLC); (eluent: 60% ethyl acetate in hexanes).

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