Sodium Bicarbonate → N-(5'-Bromo-4-(difluoromethyl)spiro[cyclohexane-1,2'-indene]-3'(1'H)-ylidene)-2-methylpropane-2-sulfinamide

HRID 1965148ノート

反応式

HRID 1965148 の反応式
[CH3:1][C:2]([S:5]([NH2:7])=[O:6])([CH3:4])[CH3:3].[Br:8][C:9]1[CH:17]=[C:16]2[C:12]([CH2:13][C:14]3([CH2:23][CH2:22][CH:21]([CH:24]([F:26])[F:25])[CH2:20][CH2:19]3)[C:15]2=O)=[CH:11][CH:10]=1.C([O-])(O)=O.[Na+]>[O-]CC.[Ti+4].[O-]CC.[O-]CC.[O-]CC.CCOC(C)=O>[Br:8][C:9]1[CH:17]=[C:16]2[C:12](=[CH:11][CH:10]=1)[CH2:13][C:14]1([CH2:23][CH2:22][CH:21]([CH:24]([F:25])[F:26])[CH2:20][CH2:19]1)[C:15]2=[N:7][S:5]([C:2]([CH3:4])([CH3:3])[CH3:1])=[O:6]

参加物

6

反応物 3

HCID 516892Sodium BicarbonateHCID 3382465Tert-Butanesulfinamide2 回HCID 679794786'-Bromo-4-(difluoromethyl)spiro[cyclohexane-1,2'-inden]-1'(3'H)-one2 回

生成物 1

HCID 67979575N-(5'-Bromo-4-(difluoromethyl)spiro[cyclohexane-1,2'-indene]-3'(1'H)-ylidene)-2-methylpropane-2-sulfinamide収率 60.1%

試薬・触媒・溶媒 2

HCID 76524Titanium tetraethoxide触媒2 回HCID 8857Ethyl Acetate溶媒

反応条件

温度
90 °C

実験手順

Titanium ethoxide (0.893 mL, 4.33 mmol), 2-methylpropane-2-sulfinamide (0.315 g, 2.60 mmol) and 6′-bromo-4-(difluoromethyl)spiro[cyclohexane-1,2′-inden]-1′(3′H)-one (Intermediate 91, 0.713 g, 2.17 mmol) were dissolved in 2-Me THF (5 mL) and heated to 90° C. overnight. 2-Methylpropane-2-sulfinamide (0.315 g, 2.60 mmol) and titanium ethoxide (0.893 mL, 4.33 mmol) were added and the reaction was refluxed for 7 h. Another portion of reagents was added and the mixture was refluxed overnight. The reaction was allowed to attain r.t. EtOAc (50 mL) was added followed by dropwise addition of NaHCO3 (10 mL). The mixture was stirred at r.t. for 2 h. The crude product was purified using flash chromatography (40 g SiO2, 0-40% EtOAc in heptane) to give the title compound (564 mg, 60% yield): MS (ES+) m/z 432 [M+H]+.

後処理

  1. temperaturethe reaction was refluxed for 7 h
  2. additionAnother portion of reagents was added
  3. temperaturethe mixture was refluxed overnight
  4. customto attain r.t
  5. customThe crude product was purified

出典と根拠

ORDレコード
ord-b396e8711b264ba0984af804e2fb33a6
出典データセット
uspto-grants-2013_04
特許番号
US08415483B2

反応ノート

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