Tetrahydrofuran → 2-Bromo-cyclopenta[def]phenanthren-4-one

HRID 254131ノート

反応式

HRID 254131 の反応式
[Br:1][C:2]1[CH:15]=[C:14]2[CH2:16][C:11]3[C:12]4[C:13]2=[C:4]([CH2:5][CH2:6][C:7]=4[CH:8]=[CH:9][CH:10]=3)[CH:3]=1.CC1(C)C(C)(C)OB(C2C3C(C(C4C=CC=CC=4)=C4C=2C=CC=C4)=CC=CC=3)[O:19]1.C([O-])([O-])=O.[K+].[K+].C1COCC1>[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O.C1(C)C=CC=CC=1>[Br:1][C:2]1[CH:15]=[C:14]2[C:16](=[O:19])[C:11]3[C:12]4=[C:13]2[C:4](=[CH:5][CH:6]=[C:7]4[CH:8]=[CH:9][CH:10]=3)[CH:3]=1

参加物

9

反応物 4

HCID 8028TetrahydrofuranHCID 11430Potassium CarbonateHCID 125243632-bromo-8,9-dihydro-4H-cyclopenta[def]phenanthreneHCID 592076184,4,5,5-Tetramethyl-2-(10-phenylanthracen-9-yl)-1,3,2-dioxaborolane

生成物 1

HCID 125243702-Bromo-cyclopenta[def]phenanthren-4-one

試薬・触媒・溶媒 4

HCID 74236Tetrabutylammonium Bromide触媒HCID 178418397HCID 178418397、化合物触媒HCID 962Water溶媒HCID 1140Toluene溶媒

反応条件

温度
100 °C

実験手順

The compound 2 (1.0 g, 1 eq., 2.02 mmol), 4,4,5,5-tetramethyl-2-(10-phenyl-anthracene-9-yl)-[1,3,2]dioxaborolane (0.77 g, 1 eq., 2.02 mmol), tetrakis(triphenylphosphine)palladium(0) (0.23 g, 0.1 eq., 0.2 mmol), 2M K2CO3 (1 ml, 1 eq., 2.02 mmol), and tetrabutylammoniumbromide (0.65 g, 1 eq., 2.02 mmol) were put into a 100 ml round bottom flask under an argon gas atmosphere, and THF (50 ml) and toluene (20 ml) were added thereto. The reaction mixture was refluxed at 100° C. for 16 hours. When the reaction solution turned dark brown, water was added, and the resultant solution was extracted with ethylacetate. The extracted organic phase was dried over anhydrous magnesium sulfate and filtered to remove a solvent. The residue was dissolved in a trace amount of toluene and purified on a silica gel column. The resultant solid was recrystallized from toluene and methanol to give a material 1 represented by Formula 18 (0.71 g, 52%). 1H NMR (300 MHz, CDCl3, δ): 8.11 (s, 2H), 7.98 (s, 3H), 7.81 (s, 2H), 7.75-7.10 (m, 13H), 1.93 (m, 4H), 1.21 (m, 20H), 0.87 (m, 6H), 0.65 (broad s, 4H).

後処理

  1. extractionthe resultant solution was extracted with ethylacetate
  2. dry with materialThe extracted organic phase was dried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. customto remove a solvent
  5. dissolutionThe residue was dissolved in a trace amount of toluene
  6. custompurified on a silica gel column
  7. customThe resultant solid was recrystallized from toluene and methanol

出典と根拠

ORDレコード
ord-c7693fbbabb24202b4000e05f77b4fe3
出典データセット
uspto-grants-2011_01
特許番号
US07875367B2

反応ノート

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