Lithium Chloride → (S)-ethyl 2-tert-butoxy-2-(5-methyl-2-(6-(1-methyl-1H-indazol-5-yl)pyridin-2-yl)-7-(trifluoromethylsulfonyloxy)benzo[d]thiazol-6-yl)acetate

HRID 879549Notes

Reaction equation

HRID 879549 reaction equation
Br[C:2]1[S:3][C:4]2[C:10]([O:11][S:12]([C:15]([F:18])([F:17])[F:16])(=[O:14])=[O:13])=[C:9]([C@H:19]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])[C:20]([O:22][CH2:23][CH3:24])=[O:21])[C:8]([CH3:30])=[CH:7][C:5]=2[N:6]=1.[Li+].[Cl-].[CH3:33][N:34]1[C:42]2[C:37](=[CH:38][C:39]([C:43]3[CH:48]=[CH:47][CH:46]=[C:45]([Sn](CCCC)(CCCC)CCCC)[N:44]=3)=[CH:40][CH:41]=2)[CH:36]=[N:35]1>O1CCOCC1.CCOC(C)=O.[Cu]I.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>[C:26]([O:25][C@@H:19]([C:9]1[C:8]([CH3:30])=[CH:7][C:5]2[N:6]=[C:2]([C:45]3[CH:46]=[CH:47][CH:48]=[C:43]([C:39]4[CH:38]=[C:37]5[C:42](=[CH:41][CH:40]=4)[N:34]([CH3:33])[N:35]=[CH:36]5)[N:44]=3)[S:3][C:4]=2[C:10]=1[O:11][S:12]([C:15]([F:18])([F:17])[F:16])(=[O:14])=[O:13])[C:20]([O:22][CH2:23][CH3:24])=[O:21])([CH3:29])([CH3:28])[CH3:27]

Participants

8

Reactant 3

HCID 433294Lithium ChlorideHCID 86699785(S)-ethyl 2-(2-bromo-5-methyl-7-(trifluoromethylsulfonyloxy)benzo[d]thiazol-6-yl)-2-tert-butoxyacetateHCID 867003731-methyl-5-(6-(tributylstannyl)pyridin-2-yl)-1H-indazole

Product 1

HCID 86700372(S)-ethyl 2-tert-butoxy-2-(5-methyl-2-(6-(1-methyl-1H-indazol-5-yl)pyridin-2-yl)-7-(trifluoromethylsulfonyloxy)benzo[d]thiazol-6-yl)acetate

Reagents, catalysts & solvents 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent2×

Conditions

Temperature
100 °C

Procedure

In a 10 mL reaction vial, (S)-ethyl 2-(2-bromo-5-methyl-7-(trifluoromethylsulfonyloxy)benzo[d]thiazol-6-yl)-2-tert-butoxyacetate (50 mg, 0.0938 mmol) was dissolved in dry dioxane (1.5 mL) under argon atmosphere. The solution was bubbled with argon for 5 min. Then LiCl (11 mg, 0.256 mmol), CuI (5 mg, 0.026 mmol) and Pd(PPh3)4 (10 mg, 0.0085 mmol) were added sequentially. A solution of 1-methyl-5-(6-(tributylstannyl)pyridin-2-yl)-1H-indazole (43 mg, 0.0853 mmol) in 1.4-dioxane (1.5 mL) was then added drop-wise. The resulting reaction mixture was then sealed and heated in oil bath at 100° C. for 3 h. The resulting reaction mixture was diluted with EtOAc (5 mL), filtered and the filtrate was concentrated and purified on silica gel column with 0-40% EtOAc/Hex to afford the title product. LCMS-ESI+: calc'd for: C30H29F3N4O6S2: 663.2, 664.2 (M+H+); Found: 663.1, 664.3 (M+H+).

Workup

  1. customIn a 10 mL reaction vial
  2. customThe solution was bubbled with argon for 5 min
  3. customThe resulting reaction mixture
  4. customwas then sealed
  5. customThe resulting reaction mixture
  6. filtrationfiltered
  7. concentrationthe filtrate was concentrated
  8. custompurified on silica gel column with 0-40% EtOAc/Hex

Sources & evidence

ORD record
ord-99f794ea666e48649904e7025ca8240d
Source dataset
uspto-grants-2015_03
Patent number
US08987250B2

Reaction notes

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