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Dichloromethane → tert-butyl (1S)-1-[4-(2-tert-butyl-1,1-dioxido-3-oxo-2,3-dihydroisothiazol-5-yl)benzyl]-2-hydroxyethylcarbamate

HRID 724600
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HRID 724600 반응식
[OH:1][CH2:2][C@H:3]([NH:20][C:21](=[O:27])[O:22][C:23]([CH3:26])([CH3:25])[CH3:24])[CH2:4][C:5]1[CH:10]=[CH:9][C:8](B2OC(C)(C)C(C)(C)O2)=[CH:7][CH:6]=1.[C:28]([N:32]1[C:36](=[O:37])[CH:35]=[C:34](Cl)[S:33]1(=[O:40])=[O:39])([CH3:31])([CH3:30])[CH3:29].C(=O)([O-])[O-].[K+].[K+].ClCCl>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[C:28]([N:32]1[C:36](=[O:37])[CH:35]=[C:34]([C:8]2[CH:7]=[CH:6][C:5]([CH2:4][C@H:3]([NH:20][C:21](=[O:27])[O:22][C:23]([CH3:24])([CH3:25])[CH3:26])[CH2:2][OH:1])=[CH:10][CH:9]=2)[S:33]1(=[O:39])=[O:40])([CH3:31])([CH3:29])[CH3:30]
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참가 물질

7

반응물 4

HCID 6344DichloromethaneHCID 11430Potassium CarbonateHCID 218786382-Tert-butyl-5-chloro-2,3-dihydro-1lambda6,2-thiazole-1,1,3-trioneHCID 86602075tert-butyl {(1R)-2-hydroxy-1-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl]ethyl}carbamate

생성물 1

HCID 58746779tert-butyl (1S)-1-[4-(2-tert-butyl-1,1-dioxido-3-oxo-2,3-dihydroisothiazol-5-yl)benzyl]-2-hydroxyethylcarbamate
수율 163.5%

시약·촉매·용매 2

HCID 44119782Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 312751,4-Dioxane용매

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온도
90 °C

실험 절차

Combined 34-A (6.1 g, 61 mmol), 9-A (3.55 g, 15.9 mmol), potassium carbonate (10.0 g, 72.4 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), complex with dichloromethane (1:1) (2.50 g, 3.06 mmol) in 200 mL dioxane. The reaction was degassed and heated at 90° C. for 48 hours. The crude was extracted with ethyl acetate, washed with water and brine. The combined organic extracts were dried over Na2SO4, filtered and evaporated to give 11.4 g of a dark glass. The crude was chromatographed on a silica column to afford a dark semi-solid (3.3 g, 90%). 1H NMR (500 MHz, CDCl3): δ 7.72 (d, J=8.8 Hz, 2H), 7.38 (d, J=8.8 Hz, 2H), 6.62 (s, 1H), 4.77 (br s, 1H), 3.89 (br s, 1H), 3.69 (m, 1H), 3.58 (m, 1H), 2.93 (d, J=7.2 Hz, 2H) 1.43 (s, 9H), 1.39 (s, 9H).

후처리

  1. customThe reaction was degassed
  2. extractionThe crude was extracted with ethyl acetate
  3. washwashed with water and brine
  4. dry with materialThe combined organic extracts were dried over Na2SO4
  5. filtrationfiltered
  6. customevaporated

출처 및 근거

ORD 기록
ord-ac51c16b69c94d40bc327f6d397a29e2
출처 데이터셋
uspto-grants-2006_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07141596B2

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