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

HRID 526323

반응식

HRID 526323 반응식
[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]=[CH: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]=[CH:13][CH:14]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

참가 물질

8

반응물 4

HCID 10796Cesium carbonateHCID 2733872tert-Butyl methyl malonateHCID 114867661-[3,5-Bis(trifluoromethyl)phenyl]-3-[(1R,2R)-(-)-2-(dimethylamino)cyclohexyl]thiourea(R,R-TUC)HCID 71268083HCID 71268083, 화합물

생성물 1

HCID 117653877tert-butyl methyl 2-{(1S)-[3-(benzyloxy)phenyl][(tert-butoxycarbonyl)amino]methyl}propanedioate

시약·촉매·용매 3

HCID 962Water용매HCID 1140Toluene용매HCID 8857Ethyl Acetate용매

반응 조건

온도
0 °C

실험 절차

Tert-butyl {[3-(benzyloxy)phenyl](phenylsulfonyl)methyl}carbamate (3.0 g, 5.93 mmol) was suspended in a toluene (21.6 mL) water (16 mL) mixture. At 0° C. tert-butyl methyl malonate (1.2 mL, 7.1 mmol), cesium carbonate (1.94 g, 5.9 mmol) and 1-[3,5-bis(trifluoromethy) phenyl]-3-[(1R,2R)-(−)-2-(dimethylamino)cyclohexyl]thiourea (246 mg, 0.59 mmol) was added and the mixture was stirred for 72 hours at 0° C. After storage at −20° C. for 72 hours the mixture was diluted with water and ethyl acetate, after filtration 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 35%) to yield 2.17 g of enantiomerically enriched tert-butyl methyl 2-{(1S)-[3-(benzyloxy)phenyl][(tert-butoxycarbonyl)amino]methyl}propanedioate.

후처리

  1. filtrationafter filtration the phases
  2. customwere separated
  3. extractionthe aqueous phase extracted with ethyl acetate
  4. dry with materialThe combined extracts were dried over sodium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified by chromatography on silica gel (ethyl acetate in hexane 0 to 35%)

출처 및 근거

ORD 기록
ord-91abd16de4f848ec89b86b9eb7815cf1
출처 데이터셋
uspto-grants-2016_05
특허 번호
US09345793B2

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