聚[6-[4-(4-氰基苯基)苯氧基]己基甲基丙烯酸酯] → (4R,9aR)-6-Ethyl-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic Acid Tert-butyl Ester

HRID 11916

反应方程式

HRID 11916 反应方程式
[C:1]([O:5][C:6]([N:8]1[CH2:20][C@@H:19]([CH3:21])[N:18]2[C@H:10]([CH2:11][C:12]3[C:17]2=[N:16][C:15](Br)=[CH:14][CH:13]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH2:23](B(CC)CC)[CH3:24].C(=O)([O-])[O-].[K+].[K+].O>CN(C)C=O.C1COCC1.Cl[Pd]Cl.C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2]>[C:1]([O:5][C:6]([N:8]1[CH2:20][C@@H:19]([CH3:21])[N:18]2[C@H:10]([CH2:11][C:12]3[C:17]2=[N:16][C:15]([CH2:23][CH3:24])=[CH:14][CH:13]=3)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

参与物

8

反应物 4

HCID 962聚[6-[4-(4-氰基苯基)苯氧基]己基甲基丙烯酸酯]HCID 7357三乙基硼2 次HCID 11430碳酸钾HCID 86590113(4R,9aR)-6-bromo-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester2 次

产物 1

HCID 69359739(4R,9aR)-6-Ethyl-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic Acid Tert-butyl Ester收率 89.5%

试剂、催化剂与溶剂 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)催化剂HCID 6228N,N-二甲基甲酰胺溶剂HCID 8028四氢呋喃溶剂

实验过程

To a solution of 0.70 g (1.90 mmol) (4R,9aR)-6-bromo-4-methyl-3,4,9,9a-tetrahydro-1H-2,4a,5-triaza-fluorene-2-carboxylic acid tert-butyl ester (Example 5, intermediate b) in 14 ml N,N-dimethylformamide was added 73.0 mg [1,1′-bis(diphenyphosphino)ferrocene]-dichloropalladium(II) and after 15 min, 4.8 ml of a 1M triethylborane solution in THF and 0.79 g (5.70 mmol) potassium carbonate were added. After 4 h another 2.4 ml triethylborane solution was added and the reaction mixture stirred overnight at 65 deg C. The mixture was cooled to room temperature and the suspension was poured into water and extracted twice with ethyl acetate. The combined organic phases were washed with brine, dried over magnesium sulfate, filtered and evaporated. The crude product was purified by column chromatography on silica gel (Q0.032–0.063 mm) with tert-butyl methyl ether:n-hexane (1:4) as eluant to yield the product as a colorless oil (89.5%).

后处理

  1. extractionextracted twice with ethyl acetate
  2. washThe combined organic phases were washed with brine
  3. dry with materialdried over magnesium sulfate
  4. filtrationfiltered
  5. customevaporated
  6. customThe crude product was purified by column chromatography on silica gel (Q0.032–0.063 mm) with tert-butyl methyl ether:n-hexane (1:4) as eluant

来源与证据

ORD记录
ord-e401693ea07b49d8b2d0052599bf9d7b
来源数据集
uspto-grants-2006_08
专利号
US07098337B2

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