Triethylamine → HCID 178439563, compound

HRID 2069996Notes

Reaction equation

HRID 2069996 reaction equation
Br[C:2]1[N:7]=[C:6]2[N:8]([C@H:12]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[CH3:13])[C:9]([OH:11])=[N:10][C:5]2=[N:4][CH:3]=1.CN1C[CH2:24][CH2:23][C:22]1=O.C(N(CC)CC)C.C([Sn](CCCC)(CCCC)/C=C/C)CCC>CCOC(C)=O.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>[C:14]1([C@@H:12]([N:8]2[C:6]3=[N:7][C:2](/[CH:22]=[CH:23]/[CH3:24])=[CH:3][N:4]=[C:5]3[N:10]=[C:9]2[OH:11])[CH3:13])[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 13387N-methyl-2-pyrrolidoneHCID 5315049Stannane, tributyl-(1Z)-1-propen-1-yl-HCID 178461678HCID 178461678, compound

Product 1

HCID 178439563HCID 178439563, compoundYield 54%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
120 °C

Procedure

A thick-walled microwave bottle equipped with a stirbar was charged with (S)-6-bromo-1-(1-phenylethyl)-1H-imidazo[4,5-b]pyrazin-2-ol (1.0 equiv), and (Ph3P)4Pd (0.12 equiv). The bottle was covered with a sheet of Parafilm and purged with nitrogen for 5 min, and N-methylpyrrolidone (14 volume equivalents), triethyl amine (2.0 equiv), and (E)-tributyl(prop-1-enyl)stannane (3.0 equiv) were added by syringe. The resulting mixture was immediately fitted with a septum and cap and heated to 120° C. in a microwave for 20 min. The reaction was then diluted with EtOAc, washed four times with saturated aq. NaHCO3 and once with brine. The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo. Reverse-phase preparative HPLC provided the title compound (54%) as a foam. LCMS m/z (APCI)=281.1 (M+H).

Workup

  1. customA thick-walled microwave bottle equipped with a stirbar
  2. custompurged with nitrogen for 5 min
  3. customThe resulting mixture was immediately fitted with a septum
  4. customcap
  5. washwashed four times with saturated aq. NaHCO3
  6. dry with materialThe organic layer was dried over sodium sulfate
  7. filtrationfiltered
  8. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-e110b456db6a411897db33a165bab787
Source dataset
uspto-grants-2012_10
Patent number
US08299248B2

Reaction notes

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