Diethyl chlorophosphate → 2-(4-{[(1E)-5-pyrimidin-2-ylpent-1-en-1-yl]sulfonyl}piperazin-1-yl)-5-(2,2,2-trifluoroethoxy)pyrimidine

HRID 1723808ノート

反応式

HRID 1723808 の反応式
[CH3:1][S:2]([N:5]1[CH2:10][CH2:9][N:8]([C:11]2[N:16]=[CH:15][C:14]([O:17][CH2:18][C:19]([F:22])([F:21])[F:20])=[CH:13][N:12]=2)[CH2:7][CH2:6]1)(=[O:4])=[O:3].[Li+].C[Si]([N-][Si](C)(C)C)(C)C.P(Cl)(OCC)(OCC)=O.[N:42]1[CH:47]=[CH:46][CH:45]=[N:44][C:43]=1[CH2:48][CH2:49][CH2:50][CH:51]=O>C1COCC1>[N:42]1[CH:47]=[CH:46][CH:45]=[N:44][C:43]=1[CH2:48][CH2:49][CH2:50]/[CH:51]=[CH:1]/[S:2]([N:5]1[CH2:6][CH2:7][N:8]([C:11]2[N:12]=[CH:13][C:14]([O:17][CH2:18][C:19]([F:22])([F:20])[F:21])=[CH:15][N:16]=2)[CH2:9][CH2:10]1)(=[O:4])=[O:3]

参加物

6

反応物 4

HCID 13139Diethyl chlorophosphateHCID 2733832Lithium HexamethyldisilazideHCID 115283684-(Pyrimidin-2-yl)butanalHCID 575592412-[4-(Methanesulfonyl)piperazin-1-yl]-5-(2,2,2-trifluoroethoxy)pyrimidine

生成物 1

HCID 688456502-(4-{[(1E)-5-pyrimidin-2-ylpent-1-en-1-yl]sulfonyl}piperazin-1-yl)-5-(2,2,2-trifluoroethoxy)pyrimidine収率 96%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

反応条件

温度
-20 °C

実験手順

To a stirred suspension of 2-[4-(methylsulfonyl)piperazin-1-yl]-5-(2,2,2-trifluoroethoxy)pyrimidine (850 mg, 2.50 mmol) in THF (25 mL) at −78° C. was added LHMDS (5.5 mL, 5.5 mmol) dropwise and the reaction stirred for 15 minutes. Diethyl chlorophosphate (0.4 mL, 2.75 mmol) was then added and stirred for 15 minutes. The solution was then treated drop wise with a solution of 4-pyrimidin-2-ylbutanal (413 mg, 2.75 mmol) in THF (5 mL), allowed to warm to −20° C. and stirred for 1 hour. The reaction was then quenched by addition of a saturated solution of NH4Cl (100 mL), extracted twice with EtOAc (2×100 mL), combined organics were washed with brine (100 mL), dried (MgSO4), filtered and concentrated in vacuo to give a yellow oil. This was then purified by flash chromatography (silica gel, 50% EtOAc/hexanes) to give 2-(4-{[(1E)-5-pyrimidin-2-ylpent-1-en-1-yl]sulfonyl}piperazin-1-yl)-5-(2,2,2-trifluoroethoxy)pyrimidine as a yellow solid (1.13 g, 2.39 mmol, 96%).

後処理

  1. stirringstirred for 15 minutes
  2. stirringstirred for 1 hour
  3. customThe reaction was then quenched by addition of a saturated solution of NH4Cl (100 mL)
  4. extractionextracted twice with EtOAc (2×100 mL)
  5. washcombined organics were washed with brine (100 mL)
  6. dry with materialdried (MgSO4)
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo
  9. customto give a yellow oil
  10. customThis was then purified by flash chromatography (silica gel, 50% EtOAc/hexanes)

出典と根拠

ORDレコード
ord-e9c846592acd4eb785c6ee4308ab49a1
出典データセット
uspto-grants-2009_02
特許番号
US07485644B2

反応ノート

読み込み中…