3-Methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine → 5-(5-bromo-2-(piperazin-1-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-4-yl)-3-methoxypyridin-2-amine

HRID 538436

반응식

HRID 538436 반응식
[CH3:1][O:2][C:3]1[C:4]([NH2:18])=[N:5][CH:6]=[C:7](B2OC(C)(C)C(C)(C)O2)[CH:8]=1.Br[C:20]1[N:21]=[C:22]([N:34]2[CH2:39][CH2:38][NH:37][CH2:36][CH2:35]2)[N:23]([CH2:26][O:27][CH2:28][CH2:29][Si:30]([CH3:33])([CH3:32])[CH3:31])[C:24]=1[Br:25]>COCCOC.C([O-])([O-])=O.[Na+].[Na+].C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Br:25][C:24]1[N:23]([CH2:26][O:27][CH2:28][CH2:29][Si:30]([CH3:33])([CH3:32])[CH3:31])[C:22]([N:34]2[CH2:35][CH2:36][NH:37][CH2:38][CH2:39]2)=[N:21][C:20]=1[C:7]1[CH:8]=[C:3]([O:2][CH3:1])[C:4]([NH2:18])=[N:5][CH:6]=1

참가 물질

6

반응물 2

HCID 533980593-Methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amineHCID 586258311-(4,5-Dibromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-2-yl)piperazine

생성물 1

HCID 665911525-(5-bromo-2-(piperazin-1-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-4-yl)-3-methoxypyridin-2-amine

시약·촉매·용매 3

HCID 178418397HCID 178418397, 화합물촉매HCID 80711,2-Dimethoxyethane용매HCID 10340Sodium Carbonate용매

반응 조건

온도
115 °C

실험 절차

A mixture of 3-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (56.2 mg, 0.225 mmol) and 1-(4,5-dibromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-2-yl)piperazine (90 mg, 0.204 mmol) in DME (2.1 ml) and 2M aqueous Na2CO3 (0.7 ml) was sparged with Ar for 2 min. Pd(Ph3P)4 (23.6 mg, 0.02 mmol) was added. The mixture was sparged with Argon for an additional 2 min and was heated in a sealed tube in a microwave reactor at 115° C. for 15 min. The reaction mixture was extracted with EtOAc (3×15 mL). The combined organic layers were washed with brine (50 mL), dried (Na2SO4), filtered and concentrated in vacuo. The crude materials of both reactions were combined and purified by preparative TLC (SiO2, 1.0 mm, 90:10 DCM-MeOH) to furnish 5-(5-bromo-2-(piperazin-1-yl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-imidazol-4-yl)-3-methoxypyridin-2-amine was isolated as a white solid which was directly used in the next step: LCMS (m/z): 485.2 (MH+), tR=0.56 min.

후처리

  1. customwas sparged with Ar for 2 min
  2. customThe mixture was sparged with Argon for an additional 2 min
  3. extractionThe reaction mixture was extracted with EtOAc (3×15 mL)
  4. washThe combined organic layers were washed with brine (50 mL)
  5. dry with materialdried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. custompurified by preparative TLC (SiO2, 1.0 mm, 90:10 DCM-MeOH)

출처 및 근거

ORD 기록
ord-d90e9e33970a457e9fb565f4779a5d49
출처 데이터셋
uspto-grants-2014_10
특허 번호
US08865732B2

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