Diethyl Ether → Diethyl (4-{[4-chloro-5-(trifluoromethyl) pyrimidin-2-yl]amino}-3-methoxybenzyl)phosphonate

HRID 511239노트

반응식

HRID 511239 반응식
CCOCC.Cl[C:7]1[N:12]=[C:11]([Cl:13])[C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][N:8]=1.[NH2:18][C:19]1[CH:33]=[CH:32][C:22]([CH2:23][P:24](=[O:31])([O:28][CH2:29][CH3:30])[O:25][CH2:26][CH3:27])=[CH:21][C:20]=1[O:34][CH3:35].C(N(CC)CC)C>ClCCCl.CC(O)(C)C.[Cl-].[Cl-].[Zn+2]>[Cl:13][C:11]1[C:10]([C:14]([F:17])([F:16])[F:15])=[CH:9][N:8]=[C:7]([NH:18][C:19]2[CH:33]=[CH:32][C:22]([CH2:23][P:24](=[O:31])([O:28][CH2:29][CH3:30])[O:25][CH2:26][CH3:27])=[CH:21][C:20]=2[O:34][CH3:35])[N:12]=1

참가 물질

8

반응물 4

HCID 3283Diethyl EtherHCID 8471TriethylamineHCID 27827742,4-Dichloro-5-(trifluoromethyl)pyrimidineHCID 86653997Diethyl(4-amino-3-methoxybenzyl)phosphonate

생성물 1

HCID 86654002Diethyl (4-{[4-chloro-5-(trifluoromethyl) pyrimidin-2-yl]amino}-3-methoxybenzyl)phosphonate수율 70%

시약·촉매·용매 3

HCID 3007855Zincchloride촉매HCID 111,2-Dichloroethane용매HCID 6386tert-Butanol용매

실험 절차

1.0 M Zinc dichloride in ether (4.07 mL, 4.07 mmol) was added to a solution of the commercially available 2,4-dichloro-5-trifluoromethylpyrimidine (0.803 g, 3.70 mmol) in 1,2-dichloroethane (6.7 mL) and t-BuOH (6.7 mL). After 30 minutes diethyl (4-amino-3-methoxybenzyl)phosphonate (1.01 g, 3.70 mmol) was added followed by triethylamine (0.567 mL, 4.07 mmol) while keeping the temperature at ˜25° C. The reaction mixture was allowed to stir at rt overnight before quenching with sat. aq. NaHCO3 (10 mL). The resulting mixture was extracted with EtOAc (15 mL) and the organic layer was washed with brine (10 mL), dried over anhydrous NaSO4, filtered, and concentrated under reduced pressure to afford a yellow oil. This crude material was initially purified using an Isco Combiflash system eluting with 0→5% MeOH in DCM as eluent followed by preparative HPLC (MDP) to afford diethyl (4-{[4-chloro-5-(trifluoromethyl)pyrimidin-2-yl]amino}-3-methoxybenzyl)phosphonate, 1.09 g (70% yield). 1H NMR (CD3OD, 400 MHz): δ=1.28 (t, J=7.07 Hz, 6 H), 3.23-3.29 (m, 2 H), 3.90-3.95 (m, 3 H), 4.01-4.13 (m, 4 H), 6.90-6.96 (m, 1 H), 7.03 (m, J=2.00 Hz, 1 H), 8.02 (d, J=8.34 Hz, 1 H), 8.62 (s, 1 H).

후처리

  1. customat ˜25° C
  2. custombefore quenching with sat. aq. NaHCO3 (10 mL)
  3. extractionThe resulting mixture was extracted with EtOAc (15 mL)
  4. washthe organic layer was washed with brine (10 mL)
  5. dry with materialdried over anhydrous NaSO4
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customto afford a yellow oil
  9. customThis crude material was initially purified
  10. washeluting with 0→5% MeOH in DCM as eluent

출처 및 근거

ORD 기록
ord-679f46bba0fb447580e6d44b058969a7
출처 데이터셋
uspto-grants-2015_08
특허 번호
US09096624B2

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