(S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-chloropyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)acetate → (S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-(1,3-dimethyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)pyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)acetate

HRID 879641Notes

Reaction equation

HRID 879641 reaction equation
[C:1]([O:5][C@@H:6]([C:11]1[C:26]([CH3:27])=[CH:25][C:14]2[N:15]=[C:16]([C:18]3[CH:23]=[CH:22][N:21]=[C:20](Cl)[CH:19]=3)[S:17][C:13]=2[C:12]=1[C:28]1[CH:33]=[CH:32][C:31]([Cl:34])=[CH:30][CH:29]=1)[C:7]([O:9][CH3:10])=[O:8])([CH3:4])([CH3:3])[CH3:2].[CH3:35][N:36]1[C:44]2[CH:43]=[N:42][C:41]([Sn](CCCC)(CCCC)CCCC)=[N:40][C:39]=2[C:38]([CH3:58])=[N:37]1>O1CCOCC1.[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:1]([O:5][C@@H:6]([C:11]1[C:26]([CH3:27])=[CH:25][C:14]2[N:15]=[C:16]([C:18]3[CH:23]=[CH:22][N:21]=[C:20]([C:41]4[N:42]=[CH:43][C:44]5[N:36]([CH3:35])[N:37]=[C:38]([CH3:58])[C:39]=5[N:40]=4)[CH:19]=3)[S:17][C:13]=2[C:12]=1[C:28]1[CH:29]=[CH:30][C:31]([Cl:34])=[CH:32][CH:33]=1)[C:7]([O:9][CH3:10])=[O:8])([CH3:2])([CH3:4])[CH3:3]

Participants

6

Reactant 2

HCID 86699808(S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-chloropyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)acetateHCID 867004481,3-dimethyl-5-(tributylstannyl)-1H-pyrazolo[4,3-d]pyrimidine

Product 1

HCID 86700450(S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-(1,3-dimethyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)pyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)acetate

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

A mixture of (S)-methyl 2-tert-butoxy-2-(7-(4-chlorophenyl)-2-(2-chloropyridin-4-yl)-5-methylbenzo[d]thiazol-6-yl)acetate (0.055 g, 0.107 mmol), 1,3-dimethyl-5-(tributylstannyl)-1H-pyrazolo[4,3-d]pyrimidine (0.058 mg, 0.133 mmol), copper(I) iodide (6 mg, 0.032 mmol) and tetrakis(triphenylphosphine)palladium(0) (11 mg, 0.012 mmol) in dioxane was heated at 90° C. for 16 hr. Reaction mixture was cooled to rt, filtered through a syringe filter and purified by CombiFlash (12 g, Gold, 10-100% EtOAc/Hex, then 15% MeOH/CH2Cl2 to elute product) to give impure product that was used in next step without further purification. LCMS-ESI+: calc'd for C33H32ClN6O3S: 627.2 (M+H+); Found: 627.2 (M+H+).

Workup

  1. customReaction mixture
  2. temperaturewas cooled to rt
  3. filtrationfiltered through a syringe
  4. filtrationfilter
  5. custompurified by CombiFlash (12 g, Gold, 10-100% EtOAc/Hex
  6. wash15% MeOH/CH2Cl2 to elute product)
  7. customto give impure product that
  8. customwas used in next step without further purification

Sources & evidence

ORD record
ord-78ea60ff5bbc473ba29991818db5f1d0
Source dataset
uspto-grants-2015_03
Patent number
US08987250B2

Reaction notes

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