2-(Tributylstannyl)-1,3-thiazole → 1-benzyl-5-chloro-2-(1,3-thiazol-2-yl)-1H-pyrrolo[3,2-b]pyridine

HRID 628313Notes

Reaction equation

[CH2:1]([N:8]1[C:16]2[C:11](=[N:12][C:13]([Cl:17])=[CH:14][CH:15]=2)[CH:10]=[C:9]1Br)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C([Sn](CCCC)(CCCC)[C:24]1[S:25][CH:26]=[CH:27][N:28]=1)CCC>C1(C)C=CC=CC=1.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>[CH2:1]([N:8]1[C:16]2[C:11](=[N:12][C:13]([Cl:17])=[CH:14][CH:15]=2)[CH:10]=[C:9]1[C:24]1[S:25][CH:26]=[CH:27][N:28]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 110 °C

Procedure

A mixture of 1-benzyl-2-bromo-5-chloro-1H-pyrrolo[3,2-b]pyridine (0.10 g, 0.31 mmol, from Example 62, Step 2) and 2-(tributylstannyl)-1,3-thiazole (0.12 g, 0.31 mmol, Aldrich) in toluene (6.0 mL) was degassed by a stream of nitrogen through the solution. Tetrakis(triphenylphosphine)palladium(0) (36 mg, 0.031 mmol) was added and the mixture was heated to 110° C. for 4 hours. Toluene was removed in vacuo and the residue was dissolved in MeCN, filtered, and purified via preparative HPLC-MS (C18 eluting with a gradient of MeCN and H2O containing 0.15% NH4OH). Yield: (33 mg, 32%).

Workup

customwas degassed by a stream of nitrogen through the solution
customToluene was removed in vacuo
dissolutionthe residue was dissolved in MeCN
filtrationfiltered
custompurified via preparative HPLC-MS (C18
washeluting with a gradient of MeCN and H2O containing 0.15% NH4OH)

Sources & evidence

ORD record: ord-0d10864239d9469d91cfbdb33ba616d8
Source dataset: uspto-grants-2016_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09309246B2

Reaction notes

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