Diisopropylethylamine → (R,E)-1-(3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)pyrrolidin-1-yl)-4-(cyclobutyl(methyl)amino)but-2-en-1-one

HRID 920201Notes

Reaction equation

HRID 920201 reaction equation
[I:1][C:2]1[C:10]2[C:5](=[N:6][CH:7]=[N:8][C:9]=2[NH2:11])[N:4]([C@@H:12]2[CH2:16][CH2:15][NH:14][CH2:13]2)[N:3]=1.Cl.[CH:18]1([N:22]([CH3:29])[CH2:23]/[CH:24]=[CH:25]/[C:26](O)=[O:27])[CH2:21][CH2:20][CH2:19]1.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[NH2:11][C:9]1[N:8]=[CH:7][N:6]=[C:5]2[N:4]([C@@H:12]3[CH2:16][CH2:15][N:14]([C:26](=[O:27])/[CH:25]=[CH:24]/[CH2:23][N:22]([CH:18]4[CH2:21][CH2:20][CH2:19]4)[CH3:29])[CH2:13]3)[N:3]=[C:2]([I:1])[C:10]=12

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 71209048(E)-4-(cyclobutyl(methyl)amino)but-2-enoic acid hydrochlorideHCID 71256207(R)-3-iodo-1-(pyrrolidin-3-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

Product 1

HCID 71256082(R,E)-1-(3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)pyrrolidin-1-yl)-4-(cyclobutyl(methyl)amino)but-2-en-1-oneYield 118.4%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a cooled solution of (R)-3-iodo-1-(pyrrolidin-3-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (4) (990 mg, 3.0 mmol), (E)-4-(cyclobutyl(methyl)amino)but-2-enoic acid (21) (871 mg, 3.0 mmol) and DIPEA (3.1 mL, 18 mmol) in DMF (15 mL) was added HBTU (1.74 g, 4.5 mmol). The resulting solution was stirred at RT overnight, then quenched with water. The layers were separated and the aqueous layer was extracted with 85% DCM/IPA(3×). The combined organic phase was dried over Na2SO4, filtered and concentrated. The residue was purified by flash chromatography to provided (R,E)-1-(3-(4-amino-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-1-yl)pyrrolidin-1-yl)-4-(cyclobutyl(methyl)amino)but-2-en-1-one (22) (1.71 g, quant. yield) as a white solid. LC-MS (ESI): m/z (M+1) 482.0.

Workup

  1. customquenched with water
  2. customThe layers were separated
  3. extractionthe aqueous layer was extracted with 85% DCM/IPA(3×)
  4. dry with materialThe combined organic phase was dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe residue was purified by flash chromatography

Sources & evidence

ORD record
ord-ae310f25cc3b42c3b4c5cc6236da075b
Source dataset
uspto-grants-2016_03
Patent number
US09273051B2

Reaction notes

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