Potassium Carbonate → 3-[1-(ethylsulfonyl)-4-piperidinyl]-5-(5-formyl-3-thienyl)-1H-indole-7-carboxamide

HRID 562024Notes

Reaction equation

Br[C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([C:11]([NH2:13])=[O:12])[CH:10]=1)[NH:7][CH:6]=[C:5]2[CH:14]1[CH2:19][CH2:18][N:17]([S:20]([CH2:23][CH3:24])(=[O:22])=[O:21])[CH2:16][CH2:15]1.CC1(C)C(C)(C)OB([C:33]2[CH:34]=[C:35]([CH:38]=[O:39])[S:36][CH:37]=2)O1.C(=O)([O-])[O-].[K+].[K+]>O1CCOCC1.O>[CH2:23]([S:20]([N:17]1[CH2:18][CH2:19][CH:14]([C:5]2[C:4]3[C:8](=[C:9]([C:11]([NH2:13])=[O:12])[CH:10]=[C:2]([C:33]4[CH:34]=[C:35]([CH:38]=[O:39])[S:36][CH:37]=4)[CH:3]=3)[NH:7][CH:6]=2)[CH2:15][CH2:16]1)(=[O:22])=[O:21])[CH3:24]

Participants

Conditions

Temperature: 150 °C

Procedure

To a solution of 5-bromo-3-[1-(ethylsulfonyl)-4-piperidinyl]-1H-indole-7-carboxamide (909 mg, 2.2 mmol) in dioxane (7.5 mL) and H2O (2.5 mL) was added 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-thiophenecarbaldehyde (1.57 g, 6.6 mmol), potassium carbonate (1.82 g, 13.2 mmol), and tetrakis(triphenylphospine)palladium (0) (30 mg, 0.22 mmol). The reaction was heated in the microwave at 150° C. for 20 min. The mixture was then concentrated to dryness. EtOAc (50 mL) was added to the residue and washed with brine. The precipitate which formed between the water and organic layer was filtered and collected as a brown solid to give 874 mg of the title compound (89%).

Workup

concentrationThe mixture was then concentrated to dryness
additionEtOAc (50 mL) was added to the residue
washwashed with brine
customThe precipitate which formed between the water and organic layer
filtrationwas filtered
customcollected as a brown solid

Sources & evidence

ORD record: ord-12e4ada7f6984ccd94ef08e0fba403e2
Source dataset: uspto-grants-2011_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08063071B2

Reaction notes

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