Methanol → 1-(1-(3,4-Dichlorobenzyl)-7-methoxy-1,2,3,4-tetrahydronaphthalen-2-yl)pyrrolidine

HRID 1044504ノート

反応式

HRID 1044504 の反応式
[Cl:1][C:2]1[CH:3]=[C:4]([CH:19]=[CH:20][C:21]=1[Cl:22])[CH2:5][CH:6]1[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([O:16][CH3:17])[CH:14]=2)[CH2:9][CH2:8][C:7]1=O.[NH:23]1[CH2:27][CH2:26][CH2:25][CH2:24]1.CO.C#N.[Na]>C1(C)C=CC=CC=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1.O>[Cl:1][C:2]1[CH:3]=[C:4]([CH:19]=[CH:20][C:21]=1[Cl:22])[CH2:5][CH:6]1[C:15]2[C:10](=[CH:11][CH:12]=[C:13]([O:16][CH3:17])[CH:14]=2)[CH2:9][CH2:8][CH:7]1[N:23]1[CH2:27][CH2:26][CH2:25][CH2:24]1

参加物

8

反応物 4

HCID 887MethanolHCID 31268PyrrolidineHCID 44134943Sodium cyanohydrideHCID 574671871-(3,4-Dichlorobenzyl)-7-methoxy-3,4-dihydronaphthalen-2(1H)-one

生成物 1

HCID 574712301-(1-(3,4-Dichlorobenzyl)-7-methoxy-1,2,3,4-tetrahydronaphthalen-2-yl)pyrrolidine収率 25%

試薬・触媒・溶媒 3

HCID 521998p-Toluenesulfonic acid monohydrate触媒HCID 962Water溶媒HCID 1140Toluene溶媒

実験手順

1-(3,4-Dichlorobenzyl)-7-methoxy-3,4-dihydronaphthalen-2(1H)-one (5.5 g, 16.4 mmol, example 1), pyrrolidine (1.40 g, 19.7 mmol), and p-toluenesulfonic acid monohydrate (31.0 mg, 0.164 mmol) were dissolved in toluene (100 ml) and refluxed for 2 h using a Dean-Stark condenser. The solvent was removed and after addition of MeOH (50 ml) and sodium cyanohydride (1.57 g, 24.6 mmol) the mixture was stirred for 4 d at room temperature under nitrogen. Water was added, the organic phase separated and the aqueous phase extracted with ethyl acetate. The combined organic layers were washed with saturated NaCl solution, dried over MgSO4, and concentrated to afford a residue that was purified by flash chromatography (silica gel, MeOH/CH2Cl23:97→5:95). The beige solid product (1.6 g, 25%) was obtained from precipitation in ethyl acetate/diisopropylether (1:1).

後処理

  1. temperaturerefluxed for 2 h
  2. customThe solvent was removed
  3. customthe organic phase separated
  4. extractionthe aqueous phase extracted with ethyl acetate
  5. washThe combined organic layers were washed with saturated NaCl solution
  6. dry with materialdried over MgSO4
  7. concentrationconcentrated
  8. customto afford a residue that
  9. customwas purified by flash chromatography (silica gel, MeOH/CH2Cl23:97→5:95)

出典と根拠

ORDレコード
ord-f8115fe5970b4b569cfc37c94fa1eacc
出典データセット
uspto-grants-2013_10
特許番号
US08563617B2

反応ノート

読み込み中…