Hydrochloric Acid → 4-(5-Bromothiophen-2-yl)benzaldehyde

HRID 1755501노트

반응식

HRID 1755501 반응식
[S:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6]1[CH:13]=[CH:12][C:9]([CH:10]=[O:11])=[CH:8][CH:7]=1.[Br:14]N1C(=O)CCC1=O.Cl>CN(C)C=O.CO>[Br:14][C:5]1[S:1][C:2]([C:6]2[CH:13]=[CH:12][C:9]([CH:10]=[O:11])=[CH:8][CH:7]=2)=[CH:3][CH:4]=1

참가 물질

6

반응물 3

HCID 313Hydrochloric AcidHCID 67184N-bromobutanimide2회HCID 7364994-(Thiophen-2-yl)benzaldehyde

생성물 1

HCID 534263164-(5-Bromothiophen-2-yl)benzaldehyde

시약·촉매·용매 2

HCID 887Methanol용매HCID 6228Dimethylformamide용매2회

실험 절차

In a two necked flask under argon, 0.75 g (3.98 mmol) of 4-(2-thienyl)benzaldehyde in 20 mL of dimethylformamide (DMF) are cooled to 0° C. 1.1 eq. (0.78 g, 4.38 mmol) of N-bromosuccinimide (NBS) are solubilised in a mixture of 10 mL of DMF and 10 mL of methanol. This solution of NBS (protected from light) is then added drop by drop (30 min) to the reaction medium. The temperature of the medium is then left to return to ambient temperature over 2 h. The medium is hydrolysed with a solution of 1 mol·L−1 HCl and extracted with ethyl ether. The combined organic phases are washed with a saturated NaCl solution then dried on anhydrous Na2SO4. After filtration and evaporation to dryness, the reaction mixture is recrystallised with acetone.

후처리

  1. waitThe temperature of the medium is then left
  2. extractionextracted with ethyl ether
  3. washThe combined organic phases are washed with a saturated NaCl solution
  4. dry with materialthen dried on anhydrous Na2SO4
  5. filtrationAfter filtration and evaporation to dryness
  6. customthe reaction mixture is recrystallised with acetone

출처 및 근거

ORD 기록
ord-2c268c4c319a452bb5849ab4d73bb79c
출처 데이터셋
uspto-grants-2015_10
특허 번호
US09171676B2

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