Formaldehyde → HCID 136005560, compound

HRID 1350430Notes

Reaction equation

HRID 1350430 reaction equation
C=O.[CH3:3][C:4]1[S:13][C:12]2[NH:11][C:10]3[CH:14]=[CH:15][CH:16]=[CH:17][C:9]=3[N:8]=[C:7]([N:18]3[CH2:23][CH2:22][NH:21][C@@H:20]([CH2:24][CH2:25][C:26]4[C:35]5[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=5)[CH:29]=[CH:28][CH:27]=4)[CH2:19]3)[C:6]=2[CH:5]=1.[C:36](O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl.C(=O)(O)[O-].[Na+]>[CH3:3][C:4]1[S:13][C:12]2[NH:11][C:10]3[CH:14]=[CH:15][CH:16]=[CH:17][C:9]=3[N:8]=[C:7]([N:18]3[CH2:23][CH2:22][N:21]([CH3:36])[C@@H:20]([CH2:24][CH2:25][C:26]4[C:35]5[C:30](=[CH:31][CH:32]=[CH:33][CH:34]=5)[CH:29]=[CH:28][CH:27]=4)[CH2:19]3)[C:6]=2[CH:5]=1

Participants

6

Reactant 3

HCID 712FormaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 136005564HCID 136005564, compound

Product 1

HCID 136005560HCID 136005560, compoundYield 97.1%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 516892Sodium BicarbonateSolvent

Procedure

Add formaldehyde (56 μL, 0.70 mmol, 37% in water) to a solution of (S)-2-methyl-10-[3-(2-naphthalen-1-yl-ethyl)-piperazin-1-yl]-4H-3-thia-4,9-diaza-benzo[f]azulene (290 mg, 0.64 mmol) in methylene chloride (20 mL). Stir 15 min at ambient temperature. Add sodium triacetoxyborohydride (204 mg, 0.96 mmol) and stir 30 min at ambient temperature. Dilute with saturated sodium bicarbonate solution and extract with methylene chloride. Dry the extracts with sodium sulfate, filter and concentrate the filtrate. Purify by radial silica gel chromatography using a 2 mm plate and 2N ammonia in methanol-methylene chloride (1%–2%) as the eluent to give 290 mg (97%) of the title compound: mass spectrum (ion spray): m/z=467 (M+1), 465 (M−1). HR-MS calculated for C29H31N4S: 467.2269. Found 467.2278. HPLC: Symmetry C18 column (3.5 μm, 4.6×50 mm). Gradient 5% to 90% solvent B in 7 min. Solvent A was 0.1% (v/v) TFA in water and solvent B was acetonitrile. Retention time 5.7 min; 100% pure.

Workup

  1. extractionextract with methylene chloride
  2. dry with materialDry the extracts with sodium sulfate
  3. filtrationfilter
  4. concentrationconcentrate the filtrate
  5. customPurify by radial silica gel chromatography

Sources & evidence

ORD record
ord-86919d17fea04fe1a26624b0d09233e1
Source dataset
uspto-grants-2007_05
Patent number
US07214673B2

Reaction notes

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