Diisopropylethylamine → (S)-N-ethyl-4-(4-((6-oxo-6,6a,7,8,9,10-hexahydro-5H-dipyrido[1,2-a:3',2'-e]pyrazin-3-yl)methyl)piperazin-1-yl)benzamide

HRID 2097833Notes

Reaction equation

HRID 2097833 reaction equation
O[CH2:2][C:3]1[CH:12]=[N:11][C:10]2[N:9]3[CH2:13][CH2:14][CH2:15][CH2:16][C@H:8]3[C:7](=[O:17])[NH:6][C:5]=2[CH:4]=1.[I-].C(C[P+](C)(C)C)#N.CCN(C(C)C)C(C)C.[CH2:35]([NH:37][C:38](=[O:51])[C:39]1[CH:44]=[CH:43][C:42]([N:45]2[CH2:50][CH2:49][NH:48][CH2:47][CH2:46]2)=[CH:41][CH:40]=1)[CH3:36]>>[CH2:35]([NH:37][C:38](=[O:51])[C:39]1[CH:40]=[CH:41][C:42]([N:45]2[CH2:46][CH2:47][N:48]([CH2:2][C:3]3[CH:12]=[N:11][C:10]4[N:9]5[CH2:13][CH2:14][CH2:15][CH2:16][C@H:8]5[C:7](=[O:17])[NH:6][C:5]=4[CH:4]=3)[CH2:49][CH2:50]2)=[CH:43][CH:44]=1)[CH3:36]

Participants

5

Reactant 4

HCID 81531DiisopropylethylamineHCID 10514344(Cyanomethyl)trimethylphosphanium iodideHCID 28749590N-ethyl-4-(piperazin-1-yl)benzamideHCID 58324368(S)-3-(hydroxymethyl)-7,8,9,10-tetrahydro-5H-dipyrido[1,2-a:3',2'-e]pyrazin-6(6aH)-one

Product 1

HCID 58324394(S)-N-ethyl-4-(4-((6-oxo-6,6a,7,8,9,10-hexahydro-5H-dipyrido[1,2-a:3',2'-e]pyrazin-3-yl)methyl)piperazin-1-yl)benzamide

Conditions

Temperature
90 °C

Procedure

To a suspension of (S)-3-(hydroxymethyl)-7,8,9,10-tetrahydro-5H-dipyrido[1,2-a:3′,2′-e]pyrazin-6(6aH)-one (800 mg, 3.43 mmol) was added (cyanomethyl)trimethylphosphonium iodide (1000 mg, 4.12 mmol) and DIEA (1797 μl, 10.29 mmol) and N-ethyl-4-(piperazin-1-yl)benzamide (800 mg, 3.43 mmol)). The vial was heated to 90° C. for 16 hours. The crude reaction was cooled to RT and filtered. The resulting solid were collected and suspended in EtOH (24 mL), heated to reflux, then cooled to RT and filtered. The resulting material was rinsed with EtOH to give a white solid.

Workup

  1. customThe crude reaction
  2. temperaturewas cooled to RT
  3. filtrationfiltered
  4. customThe resulting solid were collected
  5. temperatureheated
  6. temperatureto reflux
  7. temperaturecooled to RT
  8. filtrationfiltered
  9. washThe resulting material was rinsed with EtOH
  10. customto give a white solid

Sources & evidence

ORD record
ord-b2293fe7265446caba762b20bfd4d82d
Source dataset
uspto-grants-2013_05
Patent number
US08450323B2

Reaction notes

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