Stannanecarbonitrile, tributyl- → Methyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-cyano-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)benzoate

HRID 2047051Notes

Reaction equation

HRID 2047051 reaction equation
[CH3:1][Si:2]([CH3:49])([CH3:48])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:40][O:41][CH2:42][CH2:43][Si:44]([CH3:47])([CH3:46])[CH3:45])[C:8]1[N:13]2[N:14]=[CH:15][C:16]([C:17]3[CH:18]=[N:19][C:20]([C:23]4[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=4)=[CH:21][CH:22]=3)=[C:12]2[N:11]=[C:10]([C:29]2[CH:38]=[CH:37][C:32]([C:33]([O:35][CH3:36])=[O:34])=[CH:31][CH:30]=2)[C:9]=1Br.[C:50]([Sn](CCCC)(CCCC)CCCC)#[N:51]>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.O1CCOCC1>[CH3:1][Si:2]([CH3:49])([CH3:48])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:40][O:41][CH2:42][CH2:43][Si:44]([CH3:47])([CH3:46])[CH3:45])[C:8]1[N:13]2[N:14]=[CH:15][C:16]([C:17]3[CH:18]=[N:19][C:20]([C:23]4[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=4)=[CH:21][CH:22]=3)=[C:12]2[N:11]=[C:10]([C:29]2[CH:38]=[CH:37][C:32]([C:33]([O:35][CH3:36])=[O:34])=[CH:31][CH:30]=2)[C:9]=1[C:50]#[N:51]

Participants

5

Reactant 2

HCID 200512Stannanecarbonitrile, tributyl-HCID 67494459Methyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)benzoate

Product 1

HCID 66738140Methyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-cyano-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)benzoate

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
160 °C

Procedure

Under Ar, compound, methyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)benzoate (80 mg, 0.1 mmol) was mixed with Pd(PPh3)4 (12 mg, 0.01 mmol, Pd(t-Bu3P)3 (5 mg, 0.01 mmol), cyanotributylstannane (85 uL, 0.3 mmol) and dioxane (3 mL) in sealed tube. The resulting mixture was heated at 160° C. and stirred 2 hrs. After cooled to room temperature, the mixture was filtered through 10% KF on silica gel and washed with EtOAc. After concentration, the crude was used in the next step directly without further purification. HPLC-MS tR=3.18 min (UV254 nm); mass calculated for formula C38H46N6O4Si2 706.3, observed LCMS m/z 707.2 (M+H).

Workup

  1. temperatureAfter cooled to room temperature
  2. filtrationthe mixture was filtered through 10% KF on silica gel
  3. washwashed with EtOAc
  4. concentrationAfter concentration
  5. customthe crude was used in the next step directly without further purification

Sources & evidence

ORD record
ord-776fdf357c6947ddb0e37e6f5f489f9e
Source dataset
uspto-grants-2013_11
Patent number
US08591943B2

Reaction notes

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