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Diethyl Ether → Methyl 3-Benzyl-1,2,3,3a,4,5-hexahydro-4-(2,2-dimethyl-3-hydroxypropyl)-7H-pyrrolo (2,3-d) carbazole-6-carboxylate

HRID 330615
ノート
印刷プレビュー

反応式

HRID 330615 の反応式
[CH2:1]([N:8]1[CH:12]2[CH:13]([CH2:28][C:29]([CH3:40])([CH3:39])[CH2:30][O:31][Si](C(C)(C)C)(C)C)[CH2:14][C:15]([C:24]([O:26][CH3:27])=[O:25])=[C:16]3[NH:17][C:18]4[CH:19]=[CH:20][CH:21]=[CH:22][C:23]=4[C:11]23[CH2:10][CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1(C)C=CC(S(O)(=O)=O)=CC=1.C([O-])([O-])=O.[K+].[K+].C(OCC)C>C1COCC1.O>[CH2:1]([N:8]1[CH:12]2[CH:13]([CH2:28][C:29]([CH3:40])([CH3:39])[CH2:30][OH:31])[CH2:14][C:15]([C:24]([O:26][CH3:27])=[O:25])=[C:16]3[NH:17][C:18]4[CH:19]=[CH:20][CH:21]=[CH:22][C:23]=4[C:11]23[CH2:10][CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

7

反応物 4

HCID 3283Diethyl EtherHCID 6101p-Toluenesulfonic acidHCID 11430Potassium CarbonateHCID 14750128methyl 3-benzyl-1,2,3,3a,4,5-hexahydro-4-[2,2-dimethyl-3-(t-butyldimethylsilyloxy)propyl]-7H-pyrrolo(2,3-d)carbazole-6-carboxylate

生成物 1

HCID 14750129Methyl 3-Benzyl-1,2,3,3a,4,5-hexahydro-4-(2,2-dimethyl-3-hydroxypropyl)-7H-pyrrolo (2,3-d) carbazole-6-carboxylate
収率 97.5%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 873 mg (1.56 mmol) of methyl 3-benzyl-1,2,3,3a,4,5-hexahydro-4-[2,2-dimethyl-3-(t-butyldimethylsilyloxy)propyl]-7H-pyrrolo(2,3-d)carbazole-6-carboxylate in 30.5 mL of THF and 15 mL of water was added 5.24 g (20 eq) of p-toluenesulfonic acid. The reaction mixture was stirred for 90 min. At 20° C. and saturated aqueous K2CO3 solution was added until a pH=9-10 was obtained. Ethyl ether (100 mL) was added and the two layers were separated. The aqueous layer was extracted once with 100 mL of ethyl ether and twice with 100 mL of CH2Cl2. The combined organic layers were dried over MgSO4 and the solvents evaporated in vacuo (aspirator). The crude product was purified by column chromatography on silica gel (40 g). Elution with CH2Cl2 followed by ethyl ether gave 0.678 g (97.5%) of the title compound as a white foam. TLC: (Silica) Rf 0.50 (ethyl ether), detection with CAS (blue with developing yellow center), UV (long and short wave length).

後処理

  1. customwas obtained
  2. customthe two layers were separated
  3. extractionThe aqueous layer was extracted once with 100 mL of ethyl ether and twice with 100 mL of CH2Cl2
  4. dry with materialThe combined organic layers were dried over MgSO4
  5. customthe solvents evaporated in vacuo (aspirator)
  6. customThe crude product was purified by column chromatography on silica gel (40 g)
  7. washElution with CH2Cl2

出典と根拠

ORDレコード
ord-63690f5137354cfb8a0d5408d826618d
出典データセット
uspto-grants-1990_01
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04897477

反応ノート

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