Potassium Carbonate → 1,1-Dimethylethyl 4-[(3'-cyano-3-biphenylyl)methylidene]-1-piperidinecarboxylate

HRID 662085Notes

Reaction equation

Br[C:2]1[CH:3]=[C:4]([CH:8]=[C:9]2[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:11][CH2:10]2)[CH:5]=[CH:6][CH:7]=1.C([O-])([O-])=O.[K+].[K+].O1[CH2:33][CH2:32]OCC1>O.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:11]([C:10]1[CH:9]=[C:8]([C:2]2[CH:7]=[CH:6][CH:5]=[C:4]([CH:8]=[C:9]3[CH2:14][CH2:13][N:12]([C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])[CH2:11][CH2:10]3)[CH:3]=2)[CH:4]=[CH:32][CH:33]=1)#[N:12]

Participants

Conditions

Temperature: 130 °C

Procedure

To 1,1-dimethylethyl 4-[(3-bromophenyl)methylidene]-1-piperidinecarboxylate (2.11 g, 5.99 mmol) in 1,4-dioxane (30 mL) and water (10.00 mL) was added m-NC(C6H4)B(OH)2 (1.056 g, 7.19 mmol), Pd(Ph3P)4 0.277 g, 0.240 mmol), K2CO3 (2.483 g, 17.97 mmol). The resulting mixture was split into two equal portions and each portion was heated in a microwave at about 130° C. for about 15 min. The reaction mixture was evaporated using a Glas-Col evaporator and purified with CombiFlash chomatograph to afford the title compound (1.93 g, 86%). LC-MS m/z 749 (2M+H)+.

Workup

customThe resulting mixture was split into two equal portions
customThe reaction mixture was evaporated
customa Glas-Col evaporator
custompurified with CombiFlash chomatograph

Sources & evidence

ORD record: ord-361c2b4452cf48abb9d4921a8f39da3a
Source dataset: uspto-grants-2011_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08084449B2

Reaction notes

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