Formaldehyde → HCID 86727320, compound

HRID 518969Notes

Reaction equation

HRID 518969 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:11][CH:10]([NH:12][C:13]2[CH:14]=[C:15]3[C:24](=[CH:25][C:26]=2[CH3:27])[O:23][CH2:22][C:21]2[N:16]3[CH:17]([CH3:29])[C:18](=[O:28])[NH:19][N:20]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C=O.[C:32]([BH3-])#N.[Na+]>CO.CC(O)=O>[C:1]([O:5][C:6]([N:8]1[CH2:11][CH:10]([N:12]([C:13]2[CH:14]=[C:15]3[C:24](=[CH:25][C:26]=2[CH3:27])[O:23][CH2:22][C:21]2[N:16]3[CH:17]([CH3:29])[C:18](=[O:28])[NH:19][N:20]=2)[CH3:32])[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 712FormaldehydeHCID 5003444Sodium cyanoborohydrideHCID 86727314HCID 86727314, compound

Product 1

HCID 86727320HCID 86727320, compoundYield 49%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 887MethanolSolvent

Procedure

A solution of 3-(4,7-dimethyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (0.16 g, 0.40 mmol) and paraformaldehyde (neat, 0.024 g, 0.80 mmol) in MeOH (10 mL) and HOAc (1 mL) was heated at 70° C. for 14 h. The mixture was cooled to ambient temperature and sodium cyanoborohydride (0.050 g, 0.80 mmol) was added. The resulting dark solution was stirred at 70° C. for 3 h. The solvent was removed in vacuo and the residue was purified by column chromatography on silica gel (eluting with 33-60% EtOAc in petroleum ether) to give 3-[(4,7-dimethyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-yl)-methyl-amino]-azetidine-1-carboxylic acid tert-butyl ester as yellow solid (0.081 g, 49%). LC/MS (Table 1, Method 2) Rt=1.168 min.; MS m/z: 416 [M+H]+.

Workup

  1. customThe solvent was removed in vacuo
  2. customthe residue was purified by column chromatography on silica gel (eluting with 33-60% EtOAc in petroleum ether)

Sources & evidence

ORD record
ord-644395f4790c432492108f61e2f6f7b5
Source dataset
uspto-grants-2015_08
Patent number
US09115151B2

Reaction notes

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