Cesium carbonate → tert-butyl methyl 2-{(1S)-[5-(benzyloxy)pyridin-3-yl][(tert-butoxycarbonyl)amino]methyl}propanedioate

HRID 526330ノート

反応式

HRID 526330 の反応式
[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([CH:15]([NH:25][C:26](=[O:32])[O:27][C:28]([CH3:31])([CH3:30])[CH3:29])S(C2C=CC=CC=2)(=O)=O)[CH:12]=[N:13][CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:33]([O:40][C:41]([CH3:44])([CH3:43])[CH3:42])(=[O:39])[CH2:34][C:35]([O:37][CH3:38])=[O:36].C(=O)([O-])[O-].[Cs+].[Cs+].FC(F)(F)C1C=C(NC(N[C@@H]2CCCC[C@H]2N(C)C)=S)C=C(C(F)(F)F)C=1>O.C(OCC)(=O)C.C1(C)C=CC=CC=1>[CH2:1]([O:8][C:9]1[CH:10]=[C:11]([C@@H:15]([NH:25][C:26]([O:27][C:28]([CH3:29])([CH3:30])[CH3:31])=[O:32])[CH:34]([C:35]([O:37][CH3:38])=[O:36])[C:33]([O:40][C:41]([CH3:44])([CH3:42])[CH3:43])=[O:39])[CH:12]=[N:13][CH:14]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

参加物

8

反応物 4

HCID 10796Cesium carbonateHCID 2733872tert-Butyl methyl malonateHCID 114867661-[3,5-Bis(trifluoromethyl)phenyl]-3-[(1R,2R)-2-(dimethylamino)cyclohexyl]thioureaHCID 71268074Tert-butyl {[5-(benzyloxy)pyridin-3-yl](phenylsulfonyl)methyl}carbamate

生成物 1

HCID 117653838tert-butyl methyl 2-{(1S)-[5-(benzyloxy)pyridin-3-yl][(tert-butoxycarbonyl)amino]methyl}propanedioate

試薬・触媒・溶媒 3

HCID 962Water溶媒HCID 1140Toluene溶媒HCID 8857Ethyl Acetate溶媒

反応条件

温度
0 °C

実験手順

Tert-butyl {[5-(benzyloxy)pyridin-3-yl](phenylsulfonyl)methyl}carbamate (2.2 g, 4.84 mmol) was suspended in a toluene (16.5 mL) water (13 mL) mixture. At 0° C. tert-butyl methyl malonate (1.0 mL, 5.8 mmol), cesium carbonate (1.58 g, 4.84 mmol) and 1-[3,5-bis(trifluoromethy)phenyl]-3-[(1R,2R)-(−)-2-(dimethylamino)cyclohexyl]thiourea (200 mg, 0.48 mmol) was added and the mixture was stirred for 48 hours at 0° C. After storage at 5° C. for 72 hours the mixture was diluted with water and ethyl acetate, the phases were separated and the aqueous phase extracted with ethyl acetate. The combined extracts were dried over sodium sulfate and concentrated. The residue was purified by chromatography on silica gel (ethyl acetate in hexane 0% to 60%) to yield 1.54 g of enantiomerically enriched tert-butyl methyl 2-{(1S)-[5-(benzyloxy)pyridin-3-yl][(tert-butoxycarbonyl)amino]methyl}propanedioate.

後処理

  1. customthe phases were separated
  2. extractionthe aqueous phase extracted with ethyl acetate
  3. dry with materialThe combined extracts were dried over sodium sulfate
  4. concentrationconcentrated
  5. customThe residue was purified by chromatography on silica gel (ethyl acetate in hexane 0% to 60%)

出典と根拠

ORDレコード
ord-1a2103c66f30427986f0e4e60f7a1889
出典データセット
uspto-grants-2016_05
特許番号
US09345793B2

反応ノート

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