7-Chloro-2,3-dihydrobenzo[b][1,4]dioxine-5-carbaldehyde → 1-(6-Chloro-2,3-dihydrobenzo[b][1,4]dioxin-8-yl)ethanol

HRID 2426035ノート

反応式

HRID 2426035 の反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]=[O:13])[C:5]2[O:10][CH2:9][CH2:8][O:7][C:6]=2[CH:11]=1.[CH3:14][Mg+].[Br-]>C(OCC)C>[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]([OH:13])[CH3:14])[C:5]2[O:10][CH2:9][CH2:8][O:7][C:6]=2[CH:11]=1

参加物

4

反応物 2

HCID 179446747-Chloro-2,3-dihydrobenzo[b][1,4]dioxine-5-carbaldehydeHCID 178418689HCID 178418689、化合物

生成物 1

HCID 587072601-(6-Chloro-2,3-dihydrobenzo[b][1,4]dioxin-8-yl)ethanol

試薬・触媒・溶媒 1

HCID 3283Diethyl Ether溶媒

反応条件

温度
0 °C

実験手順

7-Chloro-2,3-dihydrobenzo[b][1,4]dioxine-5-carbaldehyde (0.26 g, 1.32 mmol) was dissolved in 10 mL of diethyl ether and cooled to 0° C. MeMgBr (1.1 mL, 3.31 mmol) was added to the solution and the ice bath was removed. The reaction was allowed to stir at rt for 10 min. and at reflux for 30 min. The reaction was cooled to 0° C. and 10 mL of sat NH4Cl were added to quench the reaction. The diethyl ether layer was separated and washed with water (20 mL×2). The organic layer was dried over Na2SO4 and the solvent was removed by rotary evaporation to collect the desired product (258 mg, 91%). 1H NMR (400 MHz, CDCl3): δ 6.91 (s, 1H), 6.77 (s, 1H), 5.02 (m, 1H), 4.24 (m, 4H), 1.45 (d, 3H).

後処理

  1. customthe ice bath was removed
  2. temperatureat reflux for 30 min
  3. temperatureThe reaction was cooled to 0° C.
  4. addition10 mL of sat NH4Cl were added
  5. customto quench
  6. customthe reaction
  7. customThe diethyl ether layer was separated
  8. washwashed with water (20 mL×2)
  9. dry with materialThe organic layer was dried over Na2SO4
  10. customthe solvent was removed by rotary evaporation
  11. customto collect the desired product (258 mg, 91%)

出典と根拠

ORDレコード
ord-37f4f94c15b546b88680f69f8c4fc150
出典データセット
uspto-grants-2011_06
特許番号
US07968538B2

反応ノート

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