Formaldehyde → HCID 136005574, compound

HRID 1350416Notes

Reaction equation

HRID 1350416 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][C@@H:10]2[NH:15][CH2:14][CH2:13][N:12]([C:16]3[C:25]4[CH:24]=[C:23]([CH3:26])[S:22][C:21]=4[NH:20][C:19]4[CH:27]=[CH:28][CH:29]=[CH:30][C:18]=4[N:17]=3)[CH2:11]2)[CH:5]=[CH:6][CH:7]=1.C=O.[C:33](O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[Cl:1][C:2]1[CH:3]=[C:4]([CH2:8][CH2:9][C@@H:10]2[N:15]([CH3:33])[CH2:14][CH2:13][N:12]([C:16]3[C:25]4[CH:24]=[C:23]([CH3:26])[S:22][C:21]=4[NH:20][C:19]4[CH:27]=[CH:28][CH:29]=[CH:30][C:18]=4[N:17]=3)[CH2:11]2)[CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 136005532HCID 136005532, compound

Product 1

HCID 136005574HCID 136005574, compoundYield 80%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

Combine 10-((S)-3-[2-(3-chloro-phenyl)-ethyl]-piperazin-1-yl)-2-methyl-4H-3-thia-4,9-diaza-benzo[f]azulene (608.3 mg, 1.53 mmol), formaldehyde (124.3 μL, 1.53 mmol, 37% in water), and 1,2-dichloroethane (30.0 ml). Stir the mixture at ambient temperature for 5 minutes and then add sodium triacetoxyborohydride (442.5 mg, 2.09 mmol). After stirring for 30 minutes at ambient temperature, quench the reaction with saturated sodium bicarbonate. Remove the organic portion, extract the aqueous with dichloromethane and combine, wash (brine), dry (sodium sulfate), and reduce the extracts to residue. Purify the residue on silica gel using dichloromethane/methanol (95:5) to give 502.3 mg (80%) of the title compound as a brown foam: mp 69°, dec; mass spectrum (ion spray): m/z=451.2 (M+1).

Workup

  1. stirringAfter stirring for 30 minutes at ambient temperature
  2. customquench
  3. customthe reaction with saturated sodium bicarbonate
  4. customRemove the organic portion
  5. extractionextract the aqueous with dichloromethane and combine
  6. washwash (brine)
  7. dry with materialdry (sodium sulfate)
  8. customPurify the residue on silica gel

Sources & evidence

ORD record
ord-9eb84b710ee0416d8a094c5786705b54
Source dataset
uspto-grants-2007_05
Patent number
US07214673B2

Reaction notes

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