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Water → tert-butyl 7-bromo-2-(4-methoxybenzyl)-3-oxo-2',3'-dihydro-1'H-spiro[isoindoline-1,4'-pyridine]-1'-carboxylate

HRID 390136
ノート
印刷プレビュー

反応式

HRID 390136 の反応式
[Br:1][C:2]1[C:3](I)=[C:4]([CH:30]=[CH:31][CH:32]=1)[C:5]([N:7]([C:17]1[CH2:22][CH2:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH:18]=1)[CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[CH:11][CH:10]=1)=[O:6].C([O-])([O-])=O.[K+].[K+].C1C=CC(P(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.O>CC#N.[Cl-].C([N+](CCCC)(CCCC)CCCC)CCC.CC([O-])=O.CC([O-])=O.[Pd+2]>[Br:1][C:2]1[CH:32]=[CH:31][CH:30]=[C:4]2[C:3]=1[C:17]1([CH:22]=[CH:21][N:20]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[CH2:19][CH2:18]1)[N:7]([CH2:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][CH3:16])=[CH:11][CH:10]=1)[C:5]2=[O:6]
参加物実験手順後処理出典と根拠反応ノート

参加物

8

反応物 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 11776TriphenylphosphineHCID 58295704tert-butyl 4-(3-bromo-2-iodo-N-(4-methoxybenzyl)benzamido)-5,6-dihydropyridine-1(2H)-carboxylate

生成物 1

HCID 58295753tert-butyl 7-bromo-2-(4-methoxybenzyl)-3-oxo-2',3'-dihydro-1'H-spiro[isoindoline-1,4'-pyridine]-1'-carboxylate収率 50.1%

試薬・触媒・溶媒

3
HCID 70681Tetrabutylammonium Chloride触媒HCID 167845palladium(II) acetate触媒HCID 6342Acetonitrile溶媒

実験手順

A solution of tert-butyl 4-(3-bromo-2-iodo-N-(4-methoxybenzyl)benzamido)-5,6-dihydropyridine-1(2H)-carboxylate (30 g, 0.048 mol) in CH3CN (500 mL) was stirred for 0.5 h under nitrogen. K2CO3 (13 g, 0.096 mol), PPh3 (6 g, 20%), tetra-butylammonium chloride (15 g, 0.048 mol) and Pd(OAc)2 (3 g, 0.0048 mol) were added. The resulting mixture was heated to reflux for 12 h. The mixture was poured into water and extracted with EtOAc. The organic layer was dried and concentrated to give the crude product which was purified by column chromatography to afford tert-butyl 7-bromo-2-(4-methoxybenzyl)-3-oxo-2′,3′-dihydro-1′H-spiro[isoindoline-1,4′-pyridine]-1′-carboxylate (12 g, 50%). 1H NMR: (400 MHz, CDCl3): δ=1.51 (s, 9H), 1.73 (m, 2H), 2.83-3.08 (m, 2H), 3.79 (s, 3H), 4.00 (m, 1H), 4.30 (m, 1H), 4.42 (d, 1H), 5.02 (d, 1H), 6.83 (d, 2H), 7.201 (d, 2H), 7.45 (m, 1H), 7.70 (d, 1H), 7.88 (d, 1H).

後処理

  1. temperatureThe resulting mixture was heated
  2. temperatureto reflux for 12 h
  3. extractionextracted with EtOAc
  4. customThe organic layer was dried
  5. concentrationconcentrated
  6. customto give the crude product which
  7. customwas purified by column chromatography

出典と根拠

ORDレコード
ord-e61d501e87164d19b02516b56f95ff72
出典データセット
uspto-grants-2013_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08383629B2

反応ノート

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