Acetonitrile → (3S,5S)-5-[({4-[3-chloro-4-fluoroanilino]-7-methoxyquinazolin-5-yl}oxy)methyl]pyrrolidin-3-ol

HRID 1443015Notes

Reaction equation

HRID 1443015 reaction equation
[Si]([O:8][C@@H:9]1[CH2:13][N:12](C(OC(C)(C)C)=O)[C@H:11]([CH2:21][O:22][C:23]2[CH:32]=[C:31]([O:33][CH3:34])[CH:30]=[C:29]3[C:24]=2[C:25]([NH:35][C:36]2[CH:41]=[CH:40][C:39]([F:42])=[C:38]([Cl:43])[CH:37]=2)=[N:26][CH:27]=[N:28]3)[CH2:10]1)(C(C)(C)C)(C)C.C(#N)C>FC(F)(F)C(O)=O>[Cl:43][C:38]1[CH:37]=[C:36]([CH:41]=[CH:40][C:39]=1[F:42])[NH:35][C:25]1[C:24]2[C:29](=[CH:30][C:31]([O:33][CH3:34])=[CH:32][C:23]=2[O:22][CH2:21][C@H:11]2[NH:12][CH2:13][C@@H:9]([OH:8])[CH2:10]2)[N:28]=[CH:27][N:26]=1

Participants

4

Reactant 2

HCID 6342AcetonitrileHCID 86607808tert-Butyl (2S,4S)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-[({4-[3-chloro-4-fluoro-anilino]-7-methoxyquinazolin-5-yl}oxy)methyl]pyrrolidine-1-carboxylate

Product 1

HCID 68676027(3S,5S)-5-[({4-[3-chloro-4-fluoroanilino]-7-methoxyquinazolin-5-yl}oxy)methyl]pyrrolidin-3-olYield 51%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Procedure

tert-Butyl (2S,4S)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-[({4-[3-chloro-4-fluoro-anilino]-7-methoxyquinazolin-5-yl}oxy)methyl]pyrrolidine-1-carboxylate (1.13 g) was dissolved in trifluoroacetic acid (50 ml) and stirred at room temperature for 72 hours. The reaction mixture was then concentrated in vacuo, and excess water was added, followed by the careful addition of saturated aqueous sodium hydrogen carbonate. The mixture was extracted with 3% methanol in DCM and the organic layer was separated, dried (Na2SO4) and concentrated in vacuo to leave a pink solid. Trituration with cold acetonitrile gave (3S,5S)-5[({4-[3-chloro-4-fluoroanilino]-7-methoxy-quinazolin-5-yl}oxy)methyl]pyrrolidin-3-ol as a brown solid (380 mg, 51%); NMR spectrum (DMSO-d6) 10.38-10.54 (br s, 1H), 8.52 (s, 1H), 8.36 (dd, 1H), 7.94-7.99 (m, 1H), 7.43 (t, 1H), 6.84 (d, 1H), 6.79 (d, 1H), 4.75 (d, 1H), 4.41 (dd, 1H), 4.26-4.34 (m, 1H), 4.17 (t, 1H), 3.94 (s, 3H), 3.54-3.73 (m, 1H), 2.96 (dd, 1H), 2.79 (dd, 1H), 2.11-2.20 (m, 1H), 1.41-1.49 (m, 1H); Mass spectrum MH+ 419.

Workup

  1. concentrationThe reaction mixture was then concentrated in vacuo, and excess water
  2. additionwas added
  3. additionfollowed by the careful addition of saturated aqueous sodium hydrogen carbonate
  4. extractionThe mixture was extracted with 3% methanol in DCM
  5. customthe organic layer was separated
  6. dry with materialdried (Na2SO4)
  7. concentrationconcentrated in vacuo
  8. customto leave a pink solid

Sources & evidence

ORD record
ord-18d1b0c52bb2464389cd3f079380157a
Source dataset
uspto-grants-2010_02
Patent number
US07659279B2

Reaction notes

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