Sodium Bicarbonate → HCID 67003597, compound

HRID 1521990Notes

Reaction equation

[Cl:1][C:2]1[C:7]([Cl:8])=[CH:6][N:5]=[C:4]2[N:9]([S:13]([C:16]3[CH:22]=[CH:21][C:19]([CH3:20])=[CH:18][CH:17]=3)(=[O:15])=[O:14])[C:10](I)=[CH:11][C:3]=12.CC1(C)C(C)(C)OB([C:31]2[CH2:36][CH2:35][N:34]([C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])[CH2:33][CH:32]=2)O1.C(=O)([O-])O.[Na+]>CN(C)C=O.O.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>[Cl:1][C:2]1[C:7]([Cl:8])=[CH:6][N:5]=[C:4]2[N:9]([S:13]([C:16]3[CH:22]=[CH:21][C:19]([CH3:20])=[CH:18][CH:17]=3)(=[O:15])=[O:14])[C:10]([C:31]3[CH2:36][CH2:35][N:34]([C:37]([O:39][C:40]([CH3:43])([CH3:42])[CH3:41])=[O:38])[CH2:33][CH:32]=3)=[CH:11][C:3]=12

Participants

Conditions

Temperature: 72 °C

Procedure

A mixture of Example 229B (0.808 g, 1.730 mmol), tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydropyridine-1(2H)-carboxylate (Frontier Scientific, 0.588 g, 1.903 mmol) and sodium hydrogencarbonate (0.436 g, 5.19 mmol) in degassed N,N-dimethylformamide (10.81 mL) and water (3.6 mL) was treated with bis(triphenylphosphine)palladium(II) chloride (0.121 g, 0.173 mmol) under nitrogen and the mixture was heated at 72° C. for 24 hours. The mixture was cooled to ambient temperature, suspended in 80 mL water, stirred for 30 minutes and filtered. Purification by flash chromatography on silica gel (AnaLogix IntelliFlash 280) eluting with a gradient of 0-20% ethyl acetate in hexanes afforded the title compound. MS (ESI+) m/z 522.2 (M+H)+.

Workup

temperatureThe mixture was cooled to ambient temperature
filtrationfiltered
customPurification by flash chromatography on silica gel (AnaLogix IntelliFlash 280)
washeluting with a gradient of 0-20% ethyl acetate in hexanes

Sources & evidence

ORD record: ord-d77fa5da1792454ebad18aa8a06d3ab5
Source dataset: uspto-grants-2015_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09073922B2

Reaction notes

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