Dimethylformamide → HCID 118483320, compound

HRID 58468Notes

Reaction equation

HRID 58468 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([C:11]([N:13]3[CH2:18][CH2:17][CH:16]([C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([F:25])[C:20]=4[C:26]([F:29])([F:28])[F:27])[CH2:15][CH2:14]3)=[O:12])=[N:9][N:10]=2)[CH:7]=1.[CH3:30][N:31](C=O)C>C(=O)(O)[O-].[Na+].[C-]#N.[Zn+2].[C-]#N.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:25][C:21]1[C:20]([C:26]([F:29])([F:28])[F:27])=[C:19]([CH:16]2[CH2:17][CH2:18][N:13]([C:11]([C:8]3[N:6]4[CH:7]=[C:2]([C:30]#[N:31])[CH:3]=[CH:4][C:5]4=[N:10][N:9]=3)=[O:12])[CH2:14][CH2:15]2)[CH:24]=[CH:23][CH:22]=1

Participants

6

Reactant 2

HCID 6228DimethylformamideHCID 118483395HCID 118483395, compound

Product 1

HCID 118483320HCID 118483320, compoundYield 67%

Reagents, catalysts & solvents 3

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 516892Sodium BicarbonateSolvent

Conditions

Temperature
130 °C

Procedure

A solution of (6-bromo-[1,2,4]triazolo[4,3-a]pyridin-3-yl)(4-(3-fluoro-2-(trifluoromethyl)phenyl)piperidin-1-yl)methanone (87 mg, 0.19 mmol) and zinc cyanide (43 mg, 037 mmol) in DMF (2.0 mL) was sparged with Ar for 10 min. To the solution was added Pd(PPh3)4 (21 mg, 0.019 mmol) the vessel was sealed and heated to 130° C. with microwaves for 30 min. The mixture was diluted with saturated sodium bicarbonate solution (30 mL) and extracted with EtOAc (3×30 mL). The combined organic extracts were concentrated to dryness under reduced pressure. The resulting residue was chromatographed over silica gel (Isco CombiFlash Rf unit, 12 g Redisep column, 0% to 70% EtOAc in hexanes) and freeze dried to provide 3-(4-(3-fluoro-2-(trifluoromethyl)phenyl)piperidine-1-carbonyl)-[1,2,4]triazolo[4,3-a]pyridine-6-carbonitrile as a white solid (52 mg, 67%): mp 188-190° C.; 1H NMR (500 MHz, DMSO-d6) δ 9.54-9.51 (m, 1H), 8.13 (dd, J=9.5, 1.0 Hz, 1H), 7.81 (dd, J=9.5, 1.5 Hz, 1H), 7.71-7.65 (m, 1H), 7.48 (d, J=8.0 Hz, 1H), 7.32 (dd, J=12.5, 8.5 Hz, 1H), 5.17-5.09 (m, 1H), 4.78-4.70 (m, 1H), 3.44-3.28 (m, 2H, overlaps with H2O), 3.09-3.00 (m, 1H), 1.97-1.75 (m, 4H); ESI MS m/z 418 [M+H]+.

Workup

  1. customwas sealed
  2. extractionextracted with EtOAc (3×30 mL)
  3. concentrationThe combined organic extracts were concentrated to dryness under reduced pressure
  4. customThe resulting residue was chromatographed over silica gel (Isco CombiFlash Rf unit, 12 g Redisep column, 0% to 70% EtOAc in hexanes)
  5. customfreeze dried

Sources & evidence

ORD record
ord-d1c5d0a1d8004aa3be400d1b6379fda2
Source dataset
uspto-grants-2016_09
Patent number
US09434727B2

Reaction notes

Loading…