Water → 2-Ethyl-3-{5-[4-[(1-methylethyl)oxy]-3-(trifluoromethyl)phenyl]-1,2,4-thiadiazol-3-yl}benzaldehyde

HRID 1942621Notes

Reaction equation

HRID 1942621 reaction equation
Br[C:2]1[N:6]=[C:5]([C:7]2[CH:12]=[CH:11][C:10]([O:13][CH:14]([CH3:16])[CH3:15])=[C:9]([C:17]([F:20])([F:19])[F:18])[CH:8]=2)[S:4][N:3]=1.[CH2:21]([C:23]1[C:30](B2OC(C)(C)C(C)(C)O2)=[CH:29][CH:28]=[CH:27][C:24]=1[CH:25]=[O:26])[CH3:22].P([O-])([O-])([O-])=O.[K+].[K+].[K+].O>CN(C)C=O.C(OCC)(=O)C.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>[CH2:21]([C:23]1[C:30]([C:2]2[N:6]=[C:5]([C:7]3[CH:12]=[CH:11][C:10]([O:13][CH:14]([CH3:16])[CH3:15])=[C:9]([C:17]([F:20])([F:19])[F:18])[CH:8]=3)[S:4][N:3]=2)=[CH:29][CH:28]=[CH:27][C:24]=1[CH:25]=[O:26])[CH3:22]

Participants

8

Reactant 4

HCID 962WaterHCID 62657Potassium Phosphate, TribasicHCID 57522699HCID 57522699, compoundHCID 584940852-Ethyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde

Product 1

HCID 575227002-Ethyl-3-{5-[4-[(1-methylethyl)oxy]-3-(trifluoromethyl)phenyl]-1,2,4-thiadiazol-3-yl}benzaldehydeYield 93.9%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
120 °C

Procedure

To a solution of 3-bromo-5-[4-[(1-methylethyl)oxy]-3-(trifluoromethyl)phenyl]-1,2,4-thiadiazole (D45) (0.93 g), 2-ethyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (D5) (0.659 g) and tripotassium phosphate (1.344 g, 6.33 mmol)) in N,N-dimethylformamide (DMF) (6 mL) and water (1.500 mL) stirred under nitrogen was added Pd(Ph3P)4 (0.585 g). The reaction was sealed and heated under microwave at 120° C. for 15 min. After cooling, the reaction mixture was diluted with ethyl acetate (20 mL), washed with water (2*8 mL), dried over sodium sulphate, concentrated and purified by column chromatography to afford 2-ethyl-3-{5-[4-[(1-methylethyl)oxy]-3-(trifluoromethyl)phenyl]-1,2,4-thiadiazol-3-yl}benzaldehyde (D47) (1 g) as a brown oil. MS (ES): C21H19F3N2O2S requires 420. found 421.1 (M+H+).

Workup

  1. customThe reaction was sealed
  2. temperatureAfter cooling
  3. washwashed with water (2*8 mL)
  4. dry with materialdried over sodium sulphate
  5. concentrationconcentrated
  6. custompurified by column chromatography

Sources & evidence

ORD record
ord-312174bbc27e4e628e61154dc6dca018
Source dataset
uspto-grants-2013_03
Patent number
US08389508B2

Reaction notes

Loading…