(Z)-Tri-n-butyl(1-propenyl)tin → (Z)-N-tert-butyl-5-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)-5-(prop-1-enyl)pyrimidin-2-yl)thiophene-2-sulfonamide

HRID 1484945

Reaction equation

HRID 1484945 reaction equation
Br[C:2]1[C:3]([NH:21][C:22]2[CH:26]=[C:25]([CH:27]3[CH2:29][CH2:28]3)[NH:24][N:23]=2)=[N:4][C:5]([C:8]2[S:12][C:11]([S:13]([NH:16][C:17]([CH3:20])([CH3:19])[CH3:18])(=[O:15])=[O:14])=[CH:10][CH:9]=2)=[N:6][CH:7]=1.[CH2:30]([Sn](CCCC)(CCCC)/C=C\C)[CH2:31][CH2:32]C>[N+](CCCC)(CCCC)(CCCC)CCCC.[Br-].Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[C:17]([NH:16][S:13]([C:11]1[S:12][C:8]([C:5]2[N:4]=[C:3]([NH:21][C:22]3[CH:26]=[C:25]([CH:27]4[CH2:29][CH2:28]4)[NH:24][N:23]=3)[C:2](/[CH:30]=[CH:31]\[CH3:32])=[CH:7][N:6]=2)=[CH:9][CH:10]=1)(=[O:15])=[O:14])([CH3:20])([CH3:19])[CH3:18]

Participants

5

Reactant 2

HCID 10914524(Z)-Tri-n-butyl(1-propenyl)tinHCID 581693555-(5-bromo-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)-N-tert-butylthiophene-2-sulfonamide

Product 1

HCID 58169526(Z)-N-tert-butyl-5-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)-5-(prop-1-enyl)pyrimidin-2-yl)thiophene-2-sulfonamideYield 82.1%

Reagents, catalysts & solvents 2

HCID 74236Tetrabutylammonium BromideCatalystHCID 178418476HCID 178418476, compoundCatalyst

Procedure

A mixture of 5-(5-bromo-4-(5-cyclopropyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)-N-tert-butylthiophene-2-sulfonamide (497.4 mg, 1.0 mmol, 1.0 eq), Pd(PPh3)2Cl2 (28.0 mg, 0.1 mmol, 0.1 eq) and Bu4NBr (321.1 mg, 0.1 mmol, 1.0 equiv.) was flushed with nitrogen. Anhydrous dioxane (10 mL) was added and the reaction mixture was flushed with nitrogen. (Z)-tributyl(prop-1-enyl)stannane (475.4 mg, 1.5 mmol, 1.5 eq) was added and the reaction mixture was stirred at rt for 2 h. The mixture was extracted with EtOAc and washed with water, brine. The organic layers were concentrated to afford the residue, which was purified by silica gel chromatography (PE/EA/MeOH=2:1:0.06 as eluant) to afford (Z)—N-tert-butyl-5-(4-(5-cyclopropyl-1H-pyrazol-3-ylamino)-5-(prop-1-enyl)pyrimidin-2-yl)thiophene-2-sulfonamide (375.6 mg, 82.1%) as white solid. LC-MS (m/z)=459 [M+H]+.

Workup

  1. customwas flushed with nitrogen
  2. additionAnhydrous dioxane (10 mL) was added
  3. customthe reaction mixture was flushed with nitrogen
  4. extractionThe mixture was extracted with EtOAc
  5. washwashed with water, brine
  6. concentrationThe organic layers were concentrated
  7. customto afford the residue, which
  8. customwas purified by silica gel chromatography (PE/EA/MeOH=2:1:0.06 as eluant)

Sources & evidence

ORD record
ord-4ca8fced5c7e4b0d8bfd489192d71c72
Source dataset
uspto-grants-2016_08
Patent number
US09422271B2

Linked notes

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