Dimethylformamide → 8-bromo-2-chloro-10H-chromeno[3,2-b]pyridin-10-one

HRID 1970292노트

반응식

HRID 1970292 반응식
[Br:1][C:2]1[CH:15]=[CH:14][C:13]2[O:12][C:11]3[C:6](=[N+:7]([O-])[CH:8]=[CH:9][CH:10]=3)[C:5](=[O:17])[C:4]=2[CH:3]=1.P(Cl)(Cl)([Cl:20])=O.CN(C=O)C>C1(C)C=CC=CC=1>[Br:1][C:2]1[CH:15]=[CH:14][C:13]2[O:12][C:11]3[C:6](=[N:7][C:8]([Cl:20])=[CH:9][CH:10]=3)[C:5](=[O:17])[C:4]=2[CH:3]=1

참가 물질

5

반응물 3

HCID 6228DimethylformamideHCID 24813Phosphorus oxychlorideHCID 667282008-bromo-10-oxo-10H-chromeno[3,2-b]pyridine 1-oxide

생성물 1

HCID 584661968-bromo-2-chloro-10H-chromeno[3,2-b]pyridin-10-one

시약·촉매·용매 1

HCID 1140Toluene용매

실험 절차

To a suspension of 8-bromo-10-oxo-10H-chromeno[3,2-b]pyridine 1-oxide in 100 mL of toluene at 0° C. was added dropwise phosphorus oxychloride (35.8 mL, 391 mmol) followed by 2 mL of DMF and the mixture was stirred at RT overnight. The solvent was evaporated under vacuum and the residue which crashed out of water, was filtered and washed with water, methanol and acetone in sequence. The solid was air dried to give 8-bromo-2-chloro-10H-chromeno[3,2-b]pyridin-10-one as a tan solid.

후처리

  1. customThe solvent was evaporated under vacuum
  2. filtrationwas filtered
  3. washwashed with water, methanol and acetone in sequence
  4. customdried

출처 및 근거

ORD 기록
ord-b1d76feed5994374a7a9f9e3c5ce8613
출처 데이터셋
uspto-grants-2013_04
특허 번호
US08426447B2

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