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

HRID 1443019Notes

Reaction equation

HRID 1443019 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 86607809tert-Butyl (2R,4R)-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 68675637(3R,5R)-5-[({4-[3-chloro-4-fluoroanilino]-7-methoxyquinazolin-5-yl}oxy)methyl]pyrrolidin-3-olYield 98%

Reagents, catalysts & solvents 1

HCID 6422Trifluoroacetic acidSolvent

Procedure

tert-Butyl (2R,4R)-4-{[tert-butyl(dimethyl)silyl]oxy}-2-[({4-[3-chloro-4-fluoro-anilino]-7-methoxyquinazolin-5-yl}oxy)methyl]pyrrolidine-1-carboxylate (839 mg) 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 green solid. Trituration with cold acetonitrile gave (3R,5R)-5-[({4-[3-chloro-4-fluoroanilino]-7-methoxy-quinazolin-5-yl}oxy)methyl]pyrrolidin-3-ol as grey solid (540 mg, 98%); NMR spectrum (DMSO-d6) 10.54-10.02 (br s, 1H), 8.48 (s, 1H), 8.32 (dd, 1H), 7.93-7.88 (m, 1H), 7.38 (t, 1H), 6.79 (d, 1H), 6.69 (d, 1H), 5.05-4.74 (br s, 1H), 4.40-4.32 (m, 2H), 4.16 (t, 1H), 3.91 (s, 3H), 3.80-3.40 (br m, 21), 2.98 (dd, 1H), 2.86 (dd, 1H), 2.22-2.14 (m, 1H), 1.52-1.44 (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 green solid

Sources & evidence

ORD record
ord-0242b237b42f40b1a457d4148068bc1e
Source dataset
uspto-grants-2010_02
Patent number
US07659279B2

Reaction notes

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