Ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-methylcyclohex-3-enecarboxylate → (Z)-ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-(2-ethoxyvinyl)-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-methylcyclohex-3-enecarboxylate

HRID 1913271Notes

Reaction equation

HRID 1913271 reaction equation
[CH3:1][Si:2]([CH3:51])([CH3:50])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:42][O:43][CH2:44][CH2:45][Si:46]([CH3:49])([CH3:48])[CH3:47])[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[CH2:34][CH2:33][C:32]([CH3:40])([C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:31][CH:30]=2)[C:9]=1Br>O1CCOCC1.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>[CH3:1][Si:2]([CH3:51])([CH3:50])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:42][O:43][CH2:44][CH2:45][Si:46]([CH3:49])([CH3:48])[CH3:47])[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[CH2:34][CH2:33][C:32]([CH3:40])([C:35]([O:37][CH2:38][CH3:39])=[O:36])[CH2:31][CH:30]=2)[C:9]=1/[CH:32]=[CH:35]\[O:37][CH2:38][CH3:39]

Participants

4

Reactant 1

HCID 68089466Ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-methylcyclohex-3-enecarboxylate

Product 1

HCID 68111075(Z)-ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-(2-ethoxyvinyl)-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-methylcyclohex-3-enecarboxylate

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-methylcyclohex-3-enecarboxylate (Int-18g, 48 mg, 0.061 mmol), (Z)-1-ethoxy-2-(tributylstannyl)ethane (72 mg), Pd(PPh3)4 (11 mg, 0.01 mmol) in dioxane (3 ml) was stirred at 100° C. under Ar for 8 h. After cooling to rt, the reaction mixture was passed through a short SiO2/KF (9:1) plug to removed majority of the Sn species. The filtrate was concentrated to give (Z)-ethyl 4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-(2-ethoxyvinyl)-3-(6-phenylpyridin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)-1-methylcyclohex-3-enecarboxylate (Int-18h) which was used in the next step directly without further purification. HPLC-MS tR=3.02 min (UV254 nm); mass calculated for formula C43H61N5O5Si2 783.4, observed LCMS m/z 784.2 (M+H).

Workup

  1. temperatureAfter cooling to rt
  2. customto removed majority of the Sn species
  3. concentrationThe filtrate was concentrated

Sources & evidence

ORD record
ord-9d07c636b05f44f48b6ee41af8df9a77
Source dataset
uspto-grants-2013_12
Patent number
US08609675B2

Reaction notes

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