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Methyl chloroformate → 1-(3,5-difluorophenyl)-2-(2,3-dihydro-6-methoxycarbonylmethyl-4-oxo-5-phenyl-4H-1,3-oxazin-3-yl)-2-methylpropan-1-one

HRID 1274864
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HRID 1274864 반응식
C[Si]([N-][Si](C)(C)C)(C)C.[Li+].[F:11][C:12]1[CH:13]=[C:14]([C:19](=[O:37])[C:20]([N:23]2[C:28](=[O:29])[C:27]([C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)=[C:26]([CH3:36])[O:25][CH2:24]2)([CH3:22])[CH3:21])[CH:15]=[C:16]([F:18])[CH:17]=1.Cl[C:39]([O:41][CH3:42])=[O:40]>O1CCCC1>[F:11][C:12]1[CH:13]=[C:14]([C:19](=[O:37])[C:20]([N:23]2[C:28](=[O:29])[C:27]([C:30]3[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=3)=[C:26]([CH2:36][C:39]([O:41][CH3:42])=[O:40])[O:25][CH2:24]2)([CH3:22])[CH3:21])[CH:15]=[C:16]([F:18])[CH:17]=1
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참가 물질

5

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HCID 6586Methyl chloroformateHCID 2733832Lithium HexamethyldisilazideHCID 221182601-(3,5-difluorophenyl)-2-(2,3-dihydro-6-methyl-4-oxo-5-phenyl-4H-1,3-oxazin-3-yl)-2-methyl-propan-1-one

생성물 1

HCID 221182741-(3,5-difluorophenyl)-2-(2,3-dihydro-6-methoxycarbonylmethyl-4-oxo-5-phenyl-4H-1,3-oxazin-3-yl)-2-methylpropan-1-one수율 11.2%

시약·촉매·용매 1

HCID 8028
Tetrahydrofuran
용매

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온도
20 °C

실험 절차

Lithium bis(trimethylsilyl)amide (1.5 ml of 1.0M solution) was added to a solution of 1-(3,5-difluorophenyl)-2-(2,3-dihydro-6-methyl-4-oxo-5-phenyl-4H-1,3-oxazin-3-yl)-2-methyl-propan-1-one (0.5 g) in tetrahydrofuran, under an inert atmosphere at -5° C. After stirring for 0.5 hours, methyl chloroformate (1.22 g) was added and the solution allowed to warm to 20° C. After 18 hours, the solution was poured onto water, extracted (ether) and evaporated. Purification by dry column chromatography on silica gel, eluting with hexane/ethyl acetate (4:1), gave 1-(3,5-difluorophenyl)-2-(2,3-dihydro-6-methoxycarbonylmethyl-4-oxo-5-phenyl-4H-1,3-oxazin-3-yl)-2-methylpropan-1-one (Compound 700, 0.065 g), NMR 1.5 (s,6H), 3.1 (s,2H), 3.6 (s,3H), 5.4 (s,2H), 6.8 (m,1H), 7.0 (m,2H), 7.2 (m,3H), 7.5 (d,2H).

후처리

  1. waitAfter 18 hours
  2. additionthe solution was poured onto water
  3. extractionextracted (ether)
  4. customevaporated
  5. customPurification
  6. customby dry column chromatography on silica gel
  7. washeluting with hexane/ethyl acetate (4:1)

출처 및 근거

ORD 기록
ord-750a4d3e084b47a492ee5e71e12e0be9
출처 데이터셋
uspto-grants-2000_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06159902

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