Sodium Hydroxide → 4,5,6,7-tetrahydro-2H-isoindole-1-carboxylic acid

HRID 1434812ノート

反応式

HRID 1434812 の反応式
[OH-].[Na+].C([O:5][C:6]([C:8]1[NH:9][CH:10]=[C:11]2[C:16]=1[CH2:15][CH2:14][CH2:13][CH2:12]2)=[O:7])C>CO>[C:8]1([C:6]([OH:7])=[O:5])[NH:9][CH:10]=[C:11]2[C:16]=1[CH2:15][CH2:14][CH2:13][CH2:12]2

参加物

4

反応物 2

HCID 14798Sodium HydroxideHCID 10035498Ethyl 4,5,6,7-Tetrahydroisoindole-1-carboxylate

生成物 1

HCID 103296454,5,6,7-tetrahydro-2H-isoindole-1-carboxylic acid

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

Freshly prepared aq. NaOH (10 M in H2O, 10.3 mmol) was added to a stirring, room temperature solution of 171 (0.3966 g, 2.05 mmol) in MeOH (5.1 mL, 0.4 M) under N2. The reaction was then heated to reflux for 20 minutes. A small amount of starting material remained. A large amount of undesired product along with only a small amount of desired product was observed by HPLC. The reaction was concentrated, redissolved in H2O, and extracted with EtOAc (1 mL). 10% aq. HCl was added dropwise to the aqueous layer until the pH=2. The white solid that precipitated from the reaction was filtered off and washed with cold H2O. The solid was dried under vacuum overnight to obtain 0.0076 g (11.6%) of 172. 1H (CD3OD, 400 MHz): δ 5.62 (1H, s), 2.77 (2H, t, J=5.6 Hz), 2.52 (2H, t, J=5.4 Hz), 1.78-1.66 (4H, m) ppm. 13C (CD3OD, 100 MHz): δ 164.87, 129.69, 122.48, 120.57, 118.42, 24.74, 24.69, 24.35, 22.94 ppm. DEPT (CD3OD, 100 MHz): CH2 carbons: 24.74, 24.69, 24.35, 22.94; CH carbons: 120.57 ppm. HPLC: 8.896 min.

後処理

  1. temperatureThe reaction was then heated
  2. temperatureto reflux for 20 minutes

出典と根拠

ORDレコード
ord-84da9452663546889a1f2029f74206dd
出典データセット
uspto-grants-2009_11
特許番号
US07615572B2

反応ノート

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