Methyl iodide → 2-chloro-6a-methyl-5-(2,2,2-trifluoroethyl)-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one

HRID 1696045노트

반응식

HRID 1696045 반응식
[Cl:1][C:2]1[N:11]=[CH:10][C:9]2[N:8]([CH2:12][C:13]([F:16])([F:15])[F:14])[C:7](=[O:17])[CH:6]3[CH2:18][O:19][CH2:20][CH2:21][N:5]3[C:4]=2[N:3]=1.IC.[CH3:24]C([O-])(C)C.[Na+]>CS(C)=O>[Cl:1][C:2]1[N:11]=[CH:10][C:9]2[N:8]([CH2:12][C:13]([F:16])([F:15])[F:14])[C:7](=[O:17])[C:6]3([CH3:24])[CH2:18][O:19][CH2:20][CH2:21][N:5]3[C:4]=2[N:3]=1

참가 물질

5

반응물 3

HCID 6328Methyl iodideHCID 23676156Sodium t-butoxideHCID 866516002-chloro-5-(2,2,2-trifluoroethyl)-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one

생성물 1

HCID 866516012-chloro-6a-methyl-5-(2,2,2-trifluoroethyl)-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one수율 24%

시약·촉매·용매 1

HCID 679Dimethyl Sulfoxide용매

실험 절차

To a mixture of 2-chloro-5-(2,2,2-trifluoroethyl)-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one (768 mg, 2.38 mmol) and iodomethane (0.595 ml, 9.52 mmol) in DMSO (15 ml) at 0° C. was added sodium 2-methylpropan-2-olate (343 mg, 3.57 mmol). The ice-bath was removed and the reaction mixture was stirred at room temperature for 16 hours. The reaction mixture was poured into water and extracted with EtOAc. The organic layers were washed with water (containing Na2S2O3), dried and concentrated in vacuo to give a crude oil. The crude residue was purified by silica gel chromatography (hexane/ethyl acetate, 19:1 to 11:9) to afford 2-chloro-6a-methyl-5-(2,2,2-trifluoroethyl)-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-6(5H)-one (191 mg, 0.566 mmol, 24% yield) as a white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 1.41 (s, 3 H) 3.17-3.28 (m, 1 H) 3.55 (td, J=12.13, 3.03 Hz, 1 H) 3.68 (d, J=11.62 Hz, 1 H) 3.89-4.07 (m, 3 H) 4.75-5.04 (m, 2 H) 8.31 (s, 1 H). MS [M+H] found 337.

후처리

  1. customThe ice-bath was removed
  2. additionThe reaction mixture was poured into water
  3. extractionextracted with EtOAc
  4. washThe organic layers were washed with water (containing Na2S2O3)
  5. customdried
  6. concentrationconcentrated in vacuo
  7. customto give a crude oil
  8. customThe crude residue was purified by silica gel chromatography (hexane/ethyl acetate, 19:1 to 11:9)

출처 및 근거

ORD 기록
ord-db4dc50cc07042dcaa0deddad6352266
출처 데이터셋
uspto-grants-2012_04
특허 번호
US08163755B2

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