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Sodium triacetoxyborohydride → 2-(2,6-dichlorophenyl)-N-((1-methylcyclobutyl)methyl)-2-((triethylsilyl)oxy)ethanamine

HRID 2202684
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HRID 2202684 반응식
[CH3:1][C:2]1([CH:6]=O)[CH2:5][CH2:4][CH2:3]1.[Cl:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([Cl:15])[C:10]=1[CH:16]([O:19][Si:20]([CH2:25][CH3:26])([CH2:23][CH3:24])[CH2:21][CH3:22])[CH2:17][NH2:18].[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)Cl>[Cl:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([Cl:15])[C:10]=1[CH:16]([O:19][Si:20]([CH2:21][CH3:22])([CH2:25][CH3:26])[CH2:23][CH3:24])[CH2:17][NH:18][CH2:6][C:2]1([CH3:1])[CH2:3][CH2:4][CH2:5]1
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반응물 3

HCID 5049666Sodium triacetoxyborohydrideHCID 201345271-Methylcyclobutane-1-carbaldehydeHCID 1238562512-(2,6-Dichlorophenyl)-2-((triethylsilyl)oxy)ethanamine

생성물 1

HCID 1239798292-(2,6-dichlorophenyl)-N-((1-methylcyclobutyl)methyl)-2-((triethylsilyl)oxy)ethanamine수율 56.7%

시약·촉매·용매 1

HCID 6344Dichloromethane
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실험 절차

To a mixture of 1-methylcyclobutanecarbaldehyde (38.3 mg, 0.390 mmol) in DCM (2.0 ml) was added 2-(2,6-dichlorophenyl)-2-((triethylsilyl)oxy)ethanamine (125 mg, 0.390 mmol) followed by NaBH(OAc)3 (124 mg, 0.585 mmol). After 45 min, this was quenched with sat. aq. NaHCO3. The layers were separated. The aqueous layer was extracted with DCM. The combined organic layers were concentrated and then purified by prep TLC eluted with 5% MeOH/DCM to provide 2-(2,6-dichlorophenyl)-N-((1-methylcyclobutyl)methyl)-2-((triethylsilyl)oxy)ethanamine (89 mg, 0.221 mmol, 56.7% yield). 1H NMR (500 MHz, CDCl3) δ 7.18-7.22 (m, 2H), 6.98-7.10 (m, 1H), 5.57 (br. s., 1H), 3.30 (t, J=10.70 Hz, 1H), 2.74 (br. s., 1H), 2.60 (br. s., 1H), 2.51 (d, J=10.03 Hz, 1H), 1.68-1.89 (m, 4H), 1.60 (br. s., 2H), 1.47 (br. s., 1H), 1.03-1.14 (m, 3H), 0.76-0.84 (m, 9H), 0.41-0.54 (m, 6H); LCMS (ESI) m/z 402.4 (M+H)+.

후처리

  1. customthis was quenched with sat. aq. NaHCO3
  2. customThe layers were separated
  3. extractionThe aqueous layer was extracted with DCM
  4. concentrationThe combined organic layers were concentrated
  5. custompurified by prep TLC
  6. washeluted with 5% MeOH/DCM

출처 및 근거

ORD 기록
ord-827326e76c1c4b498551ab6fb954ed28
출처 데이터셋
uspto-grants-2016_06
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09365522B2

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