Formaldehyde → 3-(4-Isopropylphenyl)-1',4,6,7-tetramethylspiro[benzofuran-2(3H),4'-piperidine]

HRID 272357

反応式

HRID 272357 の反応式
Cl.[CH:2]([C:5]1[CH:10]=[CH:9][C:8]([CH:11]2[C:15]3([CH2:20][CH2:19][NH:18][CH2:17][CH2:16]3)[O:14][C:13]3[C:21]([CH3:27])=[C:22]([CH3:26])[CH:23]=[C:24]([CH3:25])[C:12]2=3)=[CH:7][CH:6]=1)([CH3:4])[CH3:3].C=O.[C:30]([BH3-])#N.[Na+]>C(#N)C>[CH:2]([C:5]1[CH:10]=[CH:9][C:8]([CH:11]2[C:15]3([CH2:16][CH2:17][N:18]([CH3:30])[CH2:19][CH2:20]3)[O:14][C:13]3[C:21]([CH3:27])=[C:22]([CH3:26])[CH:23]=[C:24]([CH3:25])[C:12]2=3)=[CH:7][CH:6]=1)([CH3:4])[CH3:3]

参加物

5

反応物 3

HCID 712FormaldehydeHCID 5003444Sodium cyanoborohydrideHCID 219613533-(4-Isopropylphenyl)-4,6,7-trimethylspiro[benzofuran-2(3h),4'-piperidine]hydrochloride

生成物 1

HCID 219613123-(4-Isopropylphenyl)-1',4,6,7-tetramethylspiro[benzofuran-2(3H),4'-piperidine]収率 40%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

反応条件

温度
0 °C

実験手順

To a suspension of 3-(4-isopropylphenyl)-4,6,7-trimethylspiro[benzofuran-2(3H),4′-piperidine]hydrochloride (389.6 mg, 1.01 mmol) in acetonitrile (5 ml) was added 37% formalin (2.0 ml) and the mixture was cooled to 0° C. Sodium cyanoborohydride (101.8 mg, 1.62 mmol) was added into this mixture and the mixture was stirred at room temperature for 1 hour. The reaction mixture was concentrated under reduced pressure and an aqueous saturated solution of sodium hydrogen carbonate was added to the residue. The product was extracted twice with ethyl acetate. The combined extracts were washed with water, dried on magnesium sulfate, filtered, and then concentrated under reduced pressure. The residue was subjected to column chromatography (on Chromatorex NHDM1020 (trade name, manufactured by Fuji Silysia Chemical Ltd.); hexane-ethyl acetate 10:1) to obtain 145.0 mg (40% yield) of the title compound. Melting point: 63-64° C. (Petroleum ether)

後処理

  1. concentrationThe reaction mixture was concentrated under reduced pressure
  2. additionan aqueous saturated solution of sodium hydrogen carbonate was added to the residue
  3. extractionThe product was extracted twice with ethyl acetate
  4. washThe combined extracts were washed with water
  5. customdried on magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure

出典と根拠

ORDレコード
ord-d5a6597f1caa44b49f453a2c6b0e67a8
出典データセット
uspto-grants-2008_11
特許番号
US07456162B2

関連ノート

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