Malonic Acid → 3-[4-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-bicyclo[2.2.2]oct-1-yl]-acrylic acid

HRID 2105699Notes

Reaction equation

HRID 2105699 reaction equation
O[CH:2]1[CH:9]2[CH2:10][C:5]3([C:11]4[NH:19][C:18]5[C:17](=[O:20])[N:16]([CH2:21][CH2:22][CH3:23])[C:15](=[O:24])[N:14]([CH2:25][CH2:26][CH3:27])[C:13]=5[N:12]=4)[CH2:6][CH:7](O2)[CH:3]1O3.[C:28]([OH:34])(=[O:33])[CH2:29][C:30](O)=O.N1C=CC=C[CH:36]=1>N1CCCCC1>[O:24]=[C:15]1[N:14]([CH2:25][CH2:26][CH3:27])[C:13]2[N:12]=[C:11]([C:5]34[CH2:7][CH2:3][C:2]([CH:30]=[CH:29][C:28]([OH:34])=[O:33])([CH2:36][CH2:6]3)[CH2:9][CH2:10]4)[NH:19][C:18]=2[C:17](=[O:20])[N:16]1[CH2:21][CH2:22][CH3:23]

Participants

5

Reactant 3

HCID 867Malonic Acid2×HCID 1049PyridineHCID 187676238-(4-Hydroxy-2,6-dioxa-tricyclo [3.3.1.03.7]non-1-yl)-1,3-dipropyl-3,7-dihydro-purine-2,6-dione

Product 1

HCID 670791013-[4-(2,6-Dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-bicyclo[2.2.2]oct-1-yl]-acrylic acid

Reagents, catalysts & solvents 1

HCID 8082PiperidineCatalyst

Procedure

4-(2,6-Dioxo-1,35-dipropyl-2,3,6,7-tetrahydro-1H-purin-8-yl)-bicyclo[2.2.2]octane 1-carbaldehyde (XI, Example 9, 0.490 g, 1.32 mmol) is added to a mixture of malonic acid (0.275 g, 2.64 mmol), pyridine (2 ml), and piperidine (1 drop). The mixture is heated to 1000 for 16 hours. Four additional equivalents of malonic acid are added and heating continued for another 16 hours until consumption of aldehyde ceases, to give the title compound.

Workup

  1. temperatureThe mixture is heated to 1000 for 16 hours
  2. temperatureheating
  3. customcontinued for another 16 hours until consumption of aldehyde ceases

Sources & evidence

ORD record
ord-8f61e7dbee1345d9ad728ff8b28bfb6a
Source dataset
uspto-grants-2009_08
Patent number
US07579354B2

Reaction notes

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