Sodium Dithionite → 5-bromo-N4-ethylpyridine-3,4-diamine
반응식
[Br:1][C:2]1[C:3]2[N:10](CC)[C:9]([C:13]3C(N)=NON=3)=[N:8][C:4]=2[CH:5]=[N:6][CH:7]=1.S(S([O-])=O)([O-])=O.[Na+].[Na+]>C(O)C.O.ClCCl>[Br:1][C:2]1[C:3]([NH:10][CH2:9][CH3:13])=[C:4]([NH2:8])[CH:5]=[N:6][CH:7]=1참가 물질
6
실험 절차
A solution of the product of Step 1 (0.5 g, 2 mmol) in ethanol (8 ml)/water (10 ml) was stirred at 60° C. and sodium dithionite (2.12 g, 12.2 mmol) was added protionwise. After 10 minutes the mixture was cooled to room temperature, and diluted with water and dichloromethane. The organic phase was dried and evaporated in vacuo, the residue was used directly in the next reaction; 1H NMR (DMSO-d6) 7.76 (1H, s), 7.75 (1H, s), 5.0 (2H, br), 4.46 (1H, t, J=9.6 Hz), 3.26 (2H, m), 1.06 (3H, t, J=7.2 Hz).
후처리
- customThe organic phase was dried
- customevaporated in vacuo
- customthe residue was used directly in the next reaction
출처 및 근거
- ORD 기록
- ord-5702a78cb4e9455da3f029b1ab817159
- 출처 데이터셋
- uspto-grants-2008_03
- 특허 번호
- US07348339B2
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