Trifluoro-methanesulfonic acid 6-methyl-4-(4-trifluoromethoxyphenyl)-pyridin-2-yl ester → N-tert-Butyl-3-[6'-methyl-4'-(4-trifluoromethoxy-phenyl)-[2,2']bipyridinyl-6-yl]-benzenesulfonamide

HRID 1928480Notes

Reaction equation

HRID 1928480 reaction equation
[CH3:1][C:2]1[N:7]=[C:6](OS(C(F)(F)F)(=O)=O)[CH:5]=[C:4]([C:16]2[CH:21]=[CH:20][C:19]([O:22][C:23]([F:26])([F:25])[F:24])=[CH:18][CH:17]=2)[CH:3]=1.[C:27]([NH:31][S:32]([C:35]1[CH:40]=[CH:39][CH:38]=[C:37]([C:41]2[CH:46]=[CH:45][CH:44]=[C:43]([Sn](CCCC)(CCCC)CCCC)[N:42]=2)[CH:36]=1)(=[O:34])=[O:33])([CH3:30])([CH3:29])[CH3:28]>C1(C)C=CC=CC=1>[C:27]([NH:31][S:32]([C:35]1[CH:40]=[CH:39][CH:38]=[C:37]([C:41]2[N:42]=[C:43]([C:6]3[CH:5]=[C:4]([C:16]4[CH:17]=[CH:18][C:19]([O:22][C:23]([F:24])([F:25])[F:26])=[CH:20][CH:21]=4)[CH:3]=[C:2]([CH3:1])[N:7]=3)[CH:44]=[CH:45][CH:46]=2)[CH:36]=1)(=[O:33])=[O:34])([CH3:30])([CH3:28])[CH3:29]

Participants

4

Reactant 2

HCID 57468693Trifluoro-methanesulfonic acid 6-methyl-4-(4-trifluoromethoxyphenyl)-pyridin-2-yl esterHCID 60209340HCID 60209340, compound

Product 1

HCID 24760219N-tert-Butyl-3-[6'-methyl-4'-(4-trifluoromethoxy-phenyl)-[2,2']bipyridinyl-6-yl]-benzenesulfonamide

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A stirred mixture of trifluoro-methanesulfonic acid 6-methyl-4-(4-trifluoromethoxy-phenyl)-pyridin-2-yl ester (Example A.63) (0.221 g, 0.55 mmol), N-tert-butyl-3-(6-tributylstannanyl-pyridin-2-yl)-benzenesulfonamide (Example F.6) (0.290 g, 0.50 mmol), tetrakis(triphenyl-phosphine)palladium (0.032 g, 5 mol %) in toluene (5 mL) was heated under reflux conditions for 18 h. Cooled to rt, extracted with ethyl acetate and water, dried the organic layer over Na2SO4. Removal of the solvent in vacuum left a crude product which was purified by silica gel column chromatography with n-heptane/ethyl acetate to give the title compound after trituration with diethyl ether as a white solid (100 mg, 34%). MS (ISP) 542.8 [(M+H)+]; mp 148° C.

Workup

  1. temperaturewas heated under reflux conditions for 18 h
  2. extractionextracted with ethyl acetate and water
  3. dry with materialdried the organic layer over Na2SO4
  4. customRemoval of the solvent in vacuum
  5. waitleft a crude product which
  6. customwas purified by silica gel column chromatography with n-heptane/ethyl acetate

Sources & evidence

ORD record
ord-a0e136e9201645eca95a60a73e54ee34
Source dataset
uspto-grants-2012_05
Patent number
US08183262B2

Reaction notes

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