Triethylamine → 5-(Benzyloxy)-3-bromopicolinonitrile

HRID 1259090

반응식

HRID 1259090 반응식
[CH2:1]([O:8][C:9]1[CH:10]=[N+:11]([O-])[CH:12]=[C:13]([Br:15])[CH:14]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C[Si]([C:21]#[N:22])(C)C.C(N(CC)CC)C>C(#N)C>[CH2:1]([O:8][C:9]1[CH:14]=[C:13]([Br:15])[C:12]([C:21]#[N:22])=[N:11][CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

참가 물질

5

반응물 3

HCID 8471TriethylamineHCID 82115Trimethylsilyl cyanideHCID 582134893-(benzyloxy)-5-bromopyridine N-oxide

생성물 1

HCID 671177075-(Benzyloxy)-3-bromopicolinonitrile

시약·촉매·용매 1

HCID 6342Acetonitrile용매

반응 조건

온도
100 °C

실험 절차

To a solution of 53-(benzyloxy)-5-bromopyridine 1-oxide (from step 2) (1.0 eq.) in acetonitrile (0.2 M) was added trimethylsilyl cyanide (TMSCN) (4.0 eq.) and triethylamine (3.0 eq.). The reaction was heated at 100° C. overnight. After cooling to room temperature, the solvent was concentrated en vacuo, and the residue was purified by a COMBIFLASH® system (ISCO) using 0-40% ethyl acetate in hexane to give a mixture of two benzoxy regioisomers, one of which was the desired product. The mixture was carried onto the next step without further purification.

후처리

  1. temperatureAfter cooling to room temperature
  2. concentrationthe solvent was concentrated en vacuo
  3. customthe residue was purified by a COMBIFLASH® system (ISCO)
  4. customto give
  5. additiona mixture of two benzoxy regioisomers, one of which

출처 및 근거

ORD 기록
ord-9b526edc860d480e999b830be89590ee
출처 데이터셋
uspto-grants-2013_06
특허 번호
US08466167B2

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