1-Methyl-1H-1,2,3-triazole → tert-Butyl-3-((4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)(hydroxy)(1-methyl-1H-1,2,3-triazol-5-yl)methyl)azetidine-1-carboxylate

HRID 928829Notes

Reaction equation

HRID 928829 reaction equation
[CH3:1][N:2]1[CH:6]=[CH:5][N:4]=[N:3]1.[Li]CCCC.[C:12]([O:16][C:17]([N:19]1[CH2:22][CH:21]([C:23]([C:25]2[CH:26]=[C:27]3[C:32](=[CH:33][CH:34]=2)[N:31]=[C:30]([O:35][CH3:36])[C:29]([CH2:37][C:38]2[CH:43]=[CH:42][C:41]([C:44]([F:47])([F:46])[F:45])=[CH:40][CH:39]=2)=[C:28]3[Cl:48])=[O:24])[CH2:20]1)=[O:18])([CH3:15])([CH3:14])[CH3:13]>C1COCC1>[C:12]([O:16][C:17]([N:19]1[CH2:20][CH:21]([C:23]([C:25]2[CH:26]=[C:27]3[C:32](=[CH:33][CH:34]=2)[N:31]=[C:30]([O:35][CH3:36])[C:29]([CH2:37][C:38]2[CH:39]=[CH:40][C:41]([C:44]([F:47])([F:46])[F:45])=[CH:42][CH:43]=2)=[C:28]3[Cl:48])([OH:24])[C:6]2[N:2]([CH3:1])[N:3]=[N:4][CH:5]=2)[CH2:22]1)=[O:18])([CH3:15])([CH3:13])[CH3:14]

Participants

5

Reactant 3

HCID 1401191-Methyl-1H-1,2,3-triazoleHCID 86715662Tert-butyl-3-(4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinoline-6-carbonyl)azetidine-1-carboxylate2×HCID 178418339Butyllithium

Product 1

HCID 86715661tert-Butyl-3-((4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinolin-6-yl)(hydroxy)(1-methyl-1H-1,2,3-triazol-5-yl)methyl)azetidine-1-carboxylateYield 34.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Conditions

Temperature
-43 °C

Procedure

To a flask containing 1-methyl-1H-1,2,3-triazole (150 mg, 1.81 mmol) was added THF (15 mL) and the colorless homogeneous solution was cooled to −43° C. using a CH3CN—CO2 bath. n-BuLi (2.5M in hexanes, 0.7 mL, 1.75 mmol) was added drop wise via syringe which afforded an opaque mixture. The suspension was stirred at −40° C. for 30 min, then a THF solution of tert-butyl-3-(4-chloro-2-methoxy-3-(4-(trifluoromethyl)benzyl)quinoline-6-carbonyl)azetidine-1-carboxylate (430 mg, 0.8 mmol, in 2 mL THF, Intermediate 66: step b) was introduced at −40° C. The reaction mixture was allowed to warm gradually to room temperature over 45 min and then quenched with NH4Cl solution. The aqueous portion was extracted with EtOAc (3×30 mL) and the combined organics were washed with brine, dried over MgSO4, filtered and concentrated to provide an amber gum. Chromatography on silica gel (10% acetone-hexane increasing to 30% acetone) afforded the title compound (170 mg) as a white amorphous solid. 1H NMR (500 MHz, CDCl3) δ 8.24 (d, J=2.1 Hz, 1H), 7.78 (d, J=8.8 Hz, 1H), 7.56-7.47 (m, 3H), 7.40 (d, J=8.1 Hz, 2H), 7.35 (dd, J=8.7, 2.1 Hz, 1H), 4.35 (s, 2H), 4.20 (t, J=8.8 Hz, 1H), 4.07 (s, 3H), 4.00 (dd, J=9.3, 5.6 Hz, 1H), 3.92 (dd, J=8.9, 5.7 Hz, 1H), 3.67 (s, 3H), 3.62 (t, J=8.8 Hz, 1H), 3.52-3.38 (m, 1H), 1.38 (s, 9H). MS (ESI): mass calcd. for C30H31ClF3N5O4: 618.06, m/z found 619.9 [M+H]+.

Workup

  1. customafforded an opaque mixture
  2. temperatureto warm gradually to room temperature over 45 min
  3. customquenched with NH4Cl solution
  4. extractionThe aqueous portion was extracted with EtOAc (3×30 mL)
  5. washthe combined organics were washed with brine
  6. dry with materialdried over MgSO4
  7. filtrationfiltered
  8. concentrationconcentrated
  9. customto provide an amber gum

Sources & evidence

ORD record
ord-1e9ee07cd1054fe2bafc8240f793030d
Source dataset
uspto-grants-2016_03
Patent number
US09290476B2

Reaction notes

Loading…