Triethylamine → 4-[1-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)-1H-1,3-benzodiazol-6-yl]-2-(5-fluoropyridin-2-yl)but-3-yn-2-ol

HRID 1398681Notes

Reaction equation

HRID 1398681 reaction equation
[NH2:1][C:2]1[N:7]=[C:6]([N:8]2[C:12]3[CH:13]=[C:14](Br)[CH:15]=[CH:16][C:11]=3[N:10]=[C:9]2[O:18][CH2:19][CH2:20][OH:21])[CH:5]=[CH:4][N:3]=1.[F:22][C:23]1[CH:24]=[CH:25][C:26]([C:29]([OH:33])([C:31]#[CH:32])[CH3:30])=[N:27][CH:28]=1.C(N(CC)CC)C>CS(C)=O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[NH2:1][C:2]1[N:7]=[C:6]([N:8]2[C:12]3[CH:13]=[C:14]([C:32]#[C:31][C:29]([C:26]4[CH:25]=[CH:24][C:23]([F:22])=[CH:28][N:27]=4)([OH:33])[CH3:30])[CH:15]=[CH:16][C:11]=3[N:10]=[C:9]2[O:18][CH2:19][CH2:20][OH:21])[CH:5]=[CH:4][N:3]=1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 681816032-[[1-(2-aminopyrimidin-4-yl)-6-bromo-1H-1,3-benzodiazol-2-yl]oxy]ethan-1-olHCID 831252472-(5-Fluoropyridin-2-yl)but-3-yn-2-ol

Product 1

HCID 681819694-[1-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)-1H-1,3-benzodiazol-6-yl]-2-(5-fluoropyridin-2-yl)but-3-yn-2-olYield 1.5%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 679Dimethyl SulfoxideSolvent

Procedure

A mixture of 2-[[1-(2-aminopyrimidin-4-yl)-6-bromo-1H-1,3-benzodiazol-2-yl]oxy]ethan-1-ol (200 mg, 0.57 mmol), 2-(5-fluoropyridin-2-yl)but-3-yn-2-ol (940 mg, 5.69 mmol), bis(triphenylphosphine)palladium(II) dichloride (200 mg, 0.28 mmol) and triethylamine (0.5 mL) in dimethylsulfoxide (1 mL) was irradiated with microwave radiation under nitrogen for 1 hr at 120° C. The reaction mixture was cooled to room temperature then filtered through a frit filter to remove the catalyst. The filtrate was concentrated under vacuum and the crude product (80 mg) was purified by preparative HPLC to give 3.7 mg (1%) of 4-[1-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)-1H-1,3-benzodiazol-6-yl]-2-(5-fluoropyridin-2-yl)but-3-yn-2-ol as a light yellow solid: 1H NMR (300 MHz, DMSO) delta 8.54 (d, J=2.7 Hz, 1H), 8.37 (d, J=5.7 Hz, 1H), 8.15 (d, J=1.2, 1H), 7.84 (q, 1H), 7.78-7.72 (m, 1H), 7.43 (d, J=8.1 Hz, 1H), 7.24 (q, 1H), 7.10-7.04 (m, 3H), 6.37 (s, 1H), 5.03 (s, 1H), 4.60 (t, J=4.5 Hz, 2H), 3.81 (d, J=4.5 Hz, 2H), 1.82 (s, 3H); LC-MS: m/z=+435 (M+H)+.

Workup

  1. customwas irradiated with microwave radiation under nitrogen for 1 hr at 120° C
  2. filtrationthen filtered through a frit
  3. filtrationfilter
  4. customto remove the catalyst
  5. concentrationThe filtrate was concentrated under vacuum
  6. customthe crude product (80 mg) was purified by preparative HPLC

Sources & evidence

ORD record
ord-4a7af0e994334a4ab3ba4254fafeaee6
Source dataset
uspto-grants-2014_12
Patent number
US08901313B2

Reaction notes

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