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Dimethylformamide → HCID 21102146, compound

HRID 2355933
Notes
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Reaction equation

HRID 2355933 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][C:7](=[O:12])[N:6]([CH:13]1[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]1)[CH2:5]2.[CH3:19][N:20](C)C=O>[C-]#N.[Zn+2].[C-]#N.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>[O:12]=[C:7]1[N:6]([CH:13]2[CH2:18][CH2:17][NH:16][CH2:15][CH2:14]2)[CH2:5][C:4]2[C:9](=[CH:10][CH:11]=[C:2]([C:19]#[N:20])[CH:3]=2)[NH:8]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 6228DimethylformamideHCID 21102206HCID 21102206, compound

Product 1

HCID 21102146HCID 21102146, compoundYield 38%

Reagents, catalysts & solvents 2

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalyst

Conditions

Temperature
90 °C

Procedure

6-Bromo-3-piperidin-4-yl-3,4-dihydro-1H-quinazolin-2-one (0.16 g, 0.52 mmol), zinc cyanide (37 mg, 0.31 mmol) and tetrakis(triphenylphosphine)palladium(0) (60 mg, 0.05 mmol) were combined in dimethylformamide (4 mL). The reaction flask was connected to high vacuum and degassed (3×) by a freeze-thawing method, before being heated at 90° C. with stirring under nitrogen for 1 h. After cooling to room temperature, the solution was evaporated in vacuo and the crude mixture purified by preparative HPLC to afford 50 mg (38%) of the desired nitrile. 1H-NMR (CD3OD) δ 1.99 (m, 2H), 2.08-2.23 (m, 2H), 3.15 (m, 2H), 3.50 (bs, 1H), 3.55 (bs, 1H), 4.40 (m, 1H), 4.47 (s, 2H), 6.93 (d, J=8.1, 1H), 4.10 (m, 2H). Mass spec.: 257.13 (MH)+.

Workup

  1. customdegassed (3×) by a freeze-thawing method
  2. temperatureAfter cooling to room temperature
  3. customthe solution was evaporated in vacuo
  4. customthe crude mixture purified by preparative HPLC

Sources & evidence

ORD record
ord-e2bc0acf0f864e5dbc972f3851f8afea
Source dataset
uspto-grants-2010_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07754732B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes