Sodium hydride → (1aR,5aR)-2-(4-cyano-pyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acid

HRID 1623974Notes

Reaction equation

HRID 1623974 reaction equation
Br[C:2]1[CH:7]=[CH:6][N:5]=[C:4]([N:8]2[C:15]3[C@@H:14]4[CH2:16][C@@H:13]4[CH2:12][C:11]=3[C:10]([C:17]([OH:19])=[O:18])=[N:9]2)[CH:3]=1.[H-].[Na+].C[C:23]([N:25](C)C)=O>C(OCC)(=O)C.CO.[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>[C:23]([C:2]1[CH:7]=[CH:6][N:5]=[C:4]([N:8]2[C:15]3[C@@H:14]4[CH2:16][C@@H:13]4[CH2:12][C:11]=3[C:10]([C:17]([OH:19])=[O:18])=[N:9]2)[CH:3]=1)#[N:25]

Participants

8

Reactant 3

HCID 24758Sodium hydrideHCID 31374DimethylacetamideHCID 68182432(1aR,5aR)-2-(4-bromopyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acid

Product 1

HCID 68182356(1aR,5aR)-2-(4-cyano-pyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acid

Reagents, catalysts & solvents 4

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 887MethanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

(1aR,5aR)-2-(4-Bromo-pyridin-2-yl)-1a,2,5,5a-tetrahydro-1H-2,3-diaza-cyclopropa[a]pentalene-4-carboxylic acid (1.00 g, 3.12 mmol) was dissolved in DMA (10 mL). Sodium hydride (60 wt %, 0.125 g, 3.12 mmol) was added and the mixture was stirred vigorously for 5 min. Nitrogen was bubbled through the mixture for 10 min. Zinc(II) cyanide (0.734 g, 6.25 mmol) and tetrakis(triphenylphosphine)palladium (0.180 g, 0.156 mmol) were added. The reaction was microwaved at 120° C. for 1 h. The reaction was diluted with ethyl acetate (20 mL) and methanol (5 mL), filtered, and concentrated. The residue was purified by preparative HPLC to give the title compound (0.557 g) as a white solid. LCMS m/z=267.2 [M+H]+.

Workup

  1. customNitrogen was bubbled through the mixture for 10 min
  2. customThe reaction was microwaved at 120° C. for 1 h
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe residue was purified by preparative HPLC

Sources & evidence

ORD record
ord-b35a48e41efa497c871064507f5d6adf
Source dataset
uspto-grants-2014_07
Patent number
US08778950B2

Reaction notes

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