4-(N-Boc-amino)piperidine → tert-Butyl {1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate

HRID 656937ノート

反応式

HRID 656937 の反応式
[F:1][C:2]1[CH:11]=[C:10]([F:12])[CH:9]=[C:8]2[C:3]=1[CH:4]=[CH:5][C:6](=[O:16])[N:7]2[CH2:13][CH:14]=O.[NH:17]1[CH2:22][CH2:21][CH:20]([NH:23][C:24](=[O:30])[O:25][C:26]([CH3:29])([CH3:28])[CH3:27])[CH2:19][CH2:18]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)(Cl)Cl.CO>[F:1][C:2]1[CH:11]=[C:10]([F:12])[CH:9]=[C:8]2[C:3]=1[CH:4]=[CH:5][C:6](=[O:16])[N:7]2[CH2:13][CH2:14][N:17]1[CH2:18][CH2:19][CH:20]([NH:23][C:24](=[O:30])[O:25][C:26]([CH3:28])([CH3:27])[CH3:29])[CH2:21][CH2:22]1

参加物

6

反応物 3

HCID 7238334-(N-Boc-amino)piperidine3 回HCID 5049666Sodium triacetoxyborohydride3 回HCID 86635323(5,7-Difluoro-2-oxo-1(2H)-quinolinyl)acetaldehyde

生成物 1

HCID 86635322tert-Butyl {1-[2-(5,7-difluoro-2-oxoquinolin-1(2H)-yl)ethyl]piperidin-4-yl}carbamate収率 52.2%

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 6212Chloroform溶媒

実験手順

(5,7-Difluoro-2-oxo-1(2H)-quinolinyl)acetaldehyde (2.1 g; 9.4 mmol) and 1,1-dimethylethyl 4-piperidinylcarbamate (2.82 g; 14.1 mmol) were dissolved in a 1:1 mixture of chloroform and MeOH (60 ml:60 ml) and stirred at rt for 1 h. This was then treated with NaBH(OAc)3 (8.92 g; 42.3 mmol) and stirred for a further 1 h. More 1,1-dimethylethyl 4-piperidinylcarbamate (470 mg; 2.35 mmol) was added and the reaction stirred under the same conditions for 20 mins, this was then treated with NaBH(OAc)3 (1.98 g; 9.4 mmol) and stirred for 25 mins. More 1,1-dimethylethyl 4-piperidinylcarbamate (470 mg; 2.35 mmol) was then added and the reaction stirred for 20 mins. More NaBH(OAc)3 (500 mg; 2.38 mmol) was then added to the reaction and it was stirred overnight at rt. The solvents were then removed and the crude residue purified by column chromatography on silica gel using a 0-15% MeOH/DCM gradient to give the desired product (2 g; 52%).

後処理

  1. stirringstirred for a further 1 h
  2. stirringthe reaction stirred under the same conditions for 20 mins
  3. stirringstirred for 25 mins
  4. stirringthe reaction stirred for 20 mins
  5. stirringwas stirred overnight at rt
  6. customThe solvents were then removed
  7. customthe crude residue purified by column chromatography on silica gel using a 0-15% MeOH/DCM gradient

出典と根拠

ORDレコード
ord-3e41ef24a08946a1a335239db6223352
出典データセット
uspto-grants-2011_12
特許番号
US08071592B2

反応ノート

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