Dimethylformamide → 1-Benzyloxymethyl-3-formyl-5-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one

HRID 2097517ノート

反応式

HRID 2097517 の反応式
[CH2:1]([O:8][CH2:9][N:10]1[C:14]2[CH:15]=[N:16][N:17]([CH2:20][O:21][CH2:22][CH2:23][Si:24]([CH3:27])([CH3:26])[CH3:25])[C:18](=[O:19])[C:13]=2[C:12](I)=[CH:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.C([SiH](CC)CC)C.CN(C)[CH:45]=[O:46]>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.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].O>[CH2:1]([O:8][CH2:9][N:10]1[C:14]2[CH:15]=[N:16][N:17]([CH2:20][O:21][CH2:22][CH2:23][Si:24]([CH3:27])([CH3:26])[CH3:25])[C:18](=[O:19])[C:13]=2[C:12]([CH:45]=[O:46])=[CH:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

参加物

8

反応物 4

HCID 6228DimethylformamideHCID 8471TriethylamineHCID 12052TriethylsilaneHCID 666027841-Benzyloxymethyl-3-iodo-5-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one

生成物 1

HCID 866270441-Benzyloxymethyl-3-formyl-5-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one収率 40%

試薬・触媒・溶媒 3

HCID 167845palladium(II) acetate触媒HCID 635956Ferrocene-1,1'-bis-(diphenylphosphine)触媒HCID 962Water溶媒

実験手順

In 500 ml of an autoclave made of stainless were charged 45.3 g (86.8 mmol) of 1-benzyloxymethyl-3-iodo-5-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one obtained in Reference example 33-(c), 390 mg (1.74 mmol) of palladium acetate, 1.92 g (3.47 mmol) of 1,1′-bis(diphenylphosphino)ferrocene, 30.2 ml (220 mmol) of triethylamine, 27.7 ml (170 mmol) of triethylsilane and 300 ml of N,N-dimethylformamide, and the mixture was stirred at 80° C. for 8 hours under carbon monoxide atmosphere of 15 atm. After completion of the reaction, water was added to the reaction mixture, and the mixture was extracted with toluene. The organic layer after separation was washed with a saturated aqueous solution of sodium chloride, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The obtained residue was applied to silica gel column chromatography (Eluent; hexane:ethyl acetate=4:1 (V/V)), and the fractions containing the desired compound were concentrated under reduced pressure to obtain 14.2 g of the title compound as a brownish solid. (Yield: 40%)

後処理

  1. additionwas added to the reaction mixture
  2. extractionthe mixture was extracted with toluene
  3. customThe organic layer after separation
  4. washwas washed with a saturated aqueous solution of sodium chloride
  5. dry with materialdried over anhydrous magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. additionthe fractions containing the desired compound
  8. concentrationwere concentrated under reduced pressure

出典と根拠

ORDレコード
ord-aee974adc1cd4ad09b68a6657a22e3c9
出典データセット
uspto-grants-2013_05
特許番号
US08450319B2

反応ノート

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