Sodium Bicarbonate → (S)-tert-butyl 3-bromo-7-iodo-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-thiazole]-2'-ylcarbamate

HRID 335940

반응식

HRID 335940 반응식
[Br:1][C:2]1[CH:3]=[C:4]2[C@:15]3([CH2:19][S:18][C:17]([NH2:20])=[N:16]3)[C:14]3[C:9](=[CH:10][CH:11]=[C:12]([I:21])[CH:13]=3)[O:8][C:5]2=[N:6][CH:7]=1.[C:22](=[O:25])(O)[O-:23].[Na+]>O1CCOCC1.CCOC(C)=O>[Br:1][C:2]1[CH:3]=[C:4]2[C@:15]3([CH2:19][S:18][C:17]([NH:20][C:22](=[O:25])[O:23][C:4]([CH3:15])([CH3:5])[CH3:3])=[N:16]3)[C:14]3[C:9](=[CH:10][CH:11]=[C:12]([I:21])[CH:13]=3)[O:8][C:5]2=[N:6][CH:7]=1

참가 물질

5

반응물 2

HCID 516892Sodium BicarbonateHCID 58466127(S)-3-Bromo-7-iodo-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-thiazol]-2'-amine

생성물 1

HCID 67382944(S)-tert-butyl 3-bromo-7-iodo-5'H-spiro[chromeno[2,3-b]pyridine-5,4'-thiazole]-2'-ylcarbamate

시약·촉매·용매 2

HCID 8857Ethyl Acetate용매HCID 312751,4-Dioxane용매

실험 절차

(S)-3-Bromo-7-iodo-5′H-spiro[chromeno[2,3-b]pyridine-5,4′-thiazol]-2′-amine (2.31 g, 4.87 mmol, prepared as described in Method BB26) was dissolved in dioxane (24.36 mL). 25 mL of saturated sodium bicarbonate solution was added, followed by boc-anhydride (11.31 mL, 48.7 mmol). The reaction was stirred overnight at RT. The reaction was diluted with EtOAc and washed with water. The aqueous layer was extracted with EtOAc, and the combined organic layers were dried with sodium sulfate, filtered, and concentrated. The material was purified via column chromatography on silica gel (0-25% EtOAc:Hex) to afford (S)-tert-butyl 3-bromo-7-iodo-5′H-spiro[chromeno[2,3-b]pyridine-5,4′-thiazole]-2′-ylcarbamate (2.614 g, 4.55 mmol) as a yellow solid. MS m/z=597.9 [M+H]+. Calculated for C19H17BrIN3O3S: 574.23.

후처리

  1. washwashed with water
  2. extractionThe aqueous layer was extracted with EtOAc
  3. dry with materialthe combined organic layers were dried with sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe material was purified via column chromatography on silica gel (0-25% EtOAc:Hex)

출처 및 근거

ORD 기록
ord-1a0efb52acdf43c3b27cc932bcfe4c17
출처 데이터셋
uspto-grants-2014_11
특허 번호
US08883782B2

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