Diisopropylethylamine → (R)-5-cyano-6-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide

HRID 525739Notes

Reaction equation

HRID 525739 reaction equation
Cl[C:2]1[C:21]([C:22]#[N:23])=[CH:20][C:5]([C:6]([NH:8][C:9]2[CH:14]=[CH:13][C:12]([O:15][C:16]([F:19])([F:18])[F:17])=[CH:11][CH:10]=2)=[O:7])=[CH:4][N:3]=1.[NH:24]1[CH2:28][CH2:27][C@@H:26]([OH:29])[CH2:25]1.CCN(C(C)C)C(C)C>CC(O)C>[C:22]([C:21]1[C:2]([N:24]2[CH2:28][CH2:27][C@@H:26]([OH:29])[CH2:25]2)=[N:3][CH:4]=[C:5]([CH:20]=1)[C:6]([NH:8][C:9]1[CH:14]=[CH:13][C:12]([O:15][C:16]([F:19])([F:18])[F:17])=[CH:11][CH:10]=1)=[O:7])#[N:23]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 2759337(R)-3-PyrrolidinolHCID 899068936-chloro-5-cyano-N-(4-(trifluoromethoxy)phenyl)nicotinamide

Product 1

HCID 89907102(R)-5-cyano-6-(3-hydroxypyrrolidin-1-yl)-N-(4-(trifluoromethoxy)phenyl)nicotinamide

Reagents, catalysts & solvents 1

HCID 3776IsopropanolSolvent

Conditions

Temperature
110 °C

Procedure

A stirred mixture of 6-chloro-5-cyano-N-(4-(trifluoromethoxy)phenyl)nicotinamide (Stage 70.3, 4.50 g, 13.2 mmol), (R)-3-Pyrrolidinol (1.38 g, 15.8 mmol) and DIPEA (3.74 g, 29.0 mmol) in iPrOH (20 mL) was heated at 110° C. for 60 min. The cooled RM was then evaporated to dryness under reduced pressure and the residue was dissolved in EtOAc, washed with sat. aq. NaHCO3 and brine. The solution was dried over anhydrous Na2SO4 and the solvent was evaporated off under reduced pressure to give a crude product which was purified by crystallization from DCM/TBME to afford the product as a colorless crystalline solid. m.p. 234-236° C., HPLC (Condition 4) tR=5.41 min, UPLC-MS (Condition 8) tR=1.01 min, m/z=393.2 [M+H]+; 1H-NMR (400 MHz, DMSO-d6) δ ppm 1.00-1.25 (m, 1H), 1.80-2.06 (m, 1H), 3.67 (d, J=11.34 Hz, 1H), 3.82 (br. s, 3H), 4.01 (q, J=7.04 Hz, 1H), 4.40 (br. s, 1H), 7.34 (d, J=8.60 Hz, 2H), 7.83 (d, J=8.99 Hz, 2H), 8.51 (d, J=2.35 Hz, 1H), 8.83 (d, J=2.35 Hz, 1H), 10.23 (s, 1H).

Workup

  1. customThe cooled RM was then evaporated to dryness under reduced pressure
  2. dissolutionthe residue was dissolved in EtOAc
  3. washwashed with sat. aq. NaHCO3 and brine
  4. dry with materialThe solution was dried over anhydrous Na2SO4
  5. customthe solvent was evaporated off under reduced pressure
  6. customto give a crude product which
  7. customwas purified by crystallization from DCM/TBME

Sources & evidence

ORD record
ord-4d845f91ee564a11bd5a986ca4fd9c7a
Source dataset
uspto-grants-2016_05
Patent number
US09340537B2

Reaction notes

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