Diisopropylethylamine → (2S,4R)-2-[3-chloro-2-fluoro-5-(2H-tetrazol-5-yl)-benzylcarbamoyl]-4-fluoro-pyrrolidine-1-carboxylic acid tert-butyl ester

HRID 1527366Notes

Reaction equation

HRID 1527366 reaction equation
[C:1]([N:8]1[CH2:15][C@H:14]([F:16])[CH2:13][C@H:9]1[C:10]([OH:12])=O)([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C([N:45]1[C:49]([C:50]2[CH:51]=[C:52]([Cl:59])[C:53]([F:58])=[C:54]([CH:57]=2)[CH2:55][NH2:56])=[N:48][N:47]=[N:46]1)(C)(C)C.ClC1C(F)=C(C=C(C2N=NNN=2)C=1)CN.CCN(C(C)C)C(C)C>CN(C=O)C>[C:4]([O:3][C:1]([N:8]1[CH2:15][C@H:14]([F:16])[CH2:13][C@H:9]1[C:10](=[O:12])[NH:56][CH2:55][C:54]1[CH:57]=[C:50]([C:49]2[N:48]=[N:47][NH:46][N:45]=2)[CH:51]=[C:52]([Cl:59])[C:53]=1[F:58])=[O:2])([CH3:5])([CH3:6])[CH3:7]

Participants

7

Reactant 5

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 12043048(2S,4R)-1-[(tert-butoxy)carbonyl]-4-fluoropyrrolidine-2-carboxylic acidHCID 682830883-chloro-2-fluoro-5-(2H-tetrazol-5-yl)-benzylamineHCID 682835385-(1-tert-butyl-1H-tetrazol-5-yl)-3-chloro-2-fluoro-benzylamine

Product 1

HCID 68284165(2S,4R)-2-[3-chloro-2-fluoro-5-(2H-tetrazol-5-yl)-benzylcarbamoyl]-4-fluoro-pyrrolidine-1-carboxylic acid tert-butyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a mixture of N-boc-trans-4-fluoro-L-proline (107 mg, 0.46 mmol) and HATU (260 mg, 0.69 mmol) in DMF (2 mL) was added a 1:2 mixture of 5-(1-tert-butyl-1H-tetrazol-5-yl)-3-chloro-2-fluoro-benzylamine and 3-chloro-2-fluoro-5-(2H-tetrazol-5-yl)-benzylamine (preparation described in Part C, 220 mg, 0.46 mmol) and DIPEA (319 μl, 1.8 mmol) and the resulting solution was stirred overnight at ambient temperature. The reaction mixture was purified without aqueous workup by RP-preparative HPLC (Waters Sunfire, C18-ODB, 5 μm, 30×100 mm, 5-100% CH3CN/H2O/20 min, 100% CH3CN/2 min, CH3CN and H2O containing 0.1% TFA, flow: 40 ml/min) to give the title compounds (2S,4R)-2-[3-chloro-2-fluoro-5-(2H-tetrazol-5-yl)-benzylcarbamoyl]-4-fluoro-pyrrolidine-1-carboxylic acid tert-butyl ester: MS (LC-MS): 343.0 [M−100]+; tR (HPLC conditions c): 3.27 min and (2S,4R)-2-[5-(1-tert-butyl-1H-tetrazol-5-yl)-3-chloro-2-fluoro-benzylcarbamoyl]-4-fluoro-pyrrolidine-1-carboxylic acid tert-butyl ester: MS (LC-MS): 499.0 [M]+; tR (HPLC conditions c): 4.02 min.

Workup

  1. additionwas added
  2. customThe reaction mixture was purified without aqueous workup by RP-preparative HPLC (Waters Sunfire, C18-ODB, 5 μm, 30×100 mm, 5-100% CH3CN/H2O/20 min, 100% CH3CN/2 min, CH3CN and H2O containing 0.1% TFA, flow: 40 ml/min)

Sources & evidence

ORD record
ord-329c30d2770a442d83b665987c113d37
Source dataset
uspto-grants-2015_07
Patent number
US09085555B2

Reaction notes

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