Triethylamine → 4-Cyano-7-[(3S)-3-(dimethylamino)pyrrolidin-1-yl]-N,N,5-trimethyl-6-vinyl-1,3-benzoxazole-2-carboxamide

HRID 17469

反応式

HRID 17469 の反応式
[C:1]([C:3]1[C:8]2[N:9]=[C:10]([C:12]([N:14]([CH3:16])[CH3:15])=[O:13])[O:11][C:7]=2[C:6](F)=[C:5]([CH:18]=[CH2:19])[C:4]=1[CH3:20])#[N:2].C(N(CC)CC)C.[CH3:28][N:29]([CH3:35])[C@H:30]1[CH2:34][CH2:33][NH:32][CH2:31]1.C(=O)([O-])O.[Na+]>CS(C)=O.C(OCC)(=O)C>[C:1]([C:3]1[C:8]2[N:9]=[C:10]([C:12]([N:14]([CH3:16])[CH3:15])=[O:13])[O:11][C:7]=2[C:6]([N:32]2[CH2:33][CH2:34][C@H:30]([N:29]([CH3:35])[CH3:28])[CH2:31]2)=[C:5]([CH:18]=[CH2:19])[C:4]=1[CH3:20])#[N:2]

参加物

7

反応物 4

HCID 8471TriethylamineHCID 516892Sodium BicarbonateHCID 7019156(3S)-(-)-3-(Dimethylamino)pyrrolidineHCID 685862624-Cyano-7-fluoro-N,N,5-trimethyl-6-vinyl-1,3-benzoxazole-2-carboxamide

生成物 1

HCID 685849044-Cyano-7-[(3S)-3-(dimethylamino)pyrrolidin-1-yl]-N,N,5-trimethyl-6-vinyl-1,3-benzoxazole-2-carboxamide収率 70.3%

試薬・触媒・溶媒 2

HCID 679Dimethyl Sulfoxide溶媒2 回HCID 8857Ethyl Acetate溶媒

実験手順

4-Cyano-7-fluoro-N,N,5-trimethyl-6-vinyl-1,3-benzoxazole-2-carboxamide (I-185) (130 mg, 0.48 mmol) was dissolved in dimethyl sulfoxide (8 ml), then at room temperature, triethylamine (100 μl, 0.48 mmol) was added. The solution was gradually heated from room temperature up to 150° C. under nitrogen atmosphere, a solution of (3S)-3-(dimethylamino)pyrrolidine (79 μl, 0.62 mmol) dissolved in dimethyl sulfoxide (1 ml) was added all at a time. The solution was stirred at the same temperature for 1.25 hours, and the cooled to room temperature. This was fractionated with ethyl acetate and an aqueous saturated sodium hydrogencarbonate solution. The aqueous layer was further extracted twice with ethyl acetate. The organic layers were combined, washed with saturated brine, and dried over anhydrous sodium sulfate. The insoluble matter was separated by filtration, the solvent was evaporated away under reduced pressure, and the resulting residue was purified by preparative TLC (eluent, chloroform:methanol=93:7) to obtain a roughly-purified product (124 mg). This was washed with diisopropyl ether to obtain the entitled compound (87 mg, 50%) as a yellow solid.

後処理

  1. temperatureThe solution was gradually heated from room temperature up to 150° C. under nitrogen atmosphere
  2. additionwas added all at a time
  3. extractionThe aqueous layer was further extracted twice with ethyl acetate
  4. washwashed with saturated brine
  5. dry with materialdried over anhydrous sodium sulfate
  6. customThe insoluble matter was separated by filtration
  7. customthe solvent was evaporated away under reduced pressure
  8. customthe resulting residue was purified by preparative TLC (eluent, chloroform:methanol=93:7)

出典と根拠

ORDレコード
ord-3f371b60ffb142eaa34c722c345bd6b3
出典データセット
uspto-grants-2010_06
特許番号
US07737166B2

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