Diisopropylethylamine → Methyl 2-(4-propan-2-yl-1,4-diazepan-1-yl)pyrimidine-5-carboxylate
Reaction equation
Cl[C:2]1[N:7]=[CH:6][C:5]([C:8]([O:10][CH3:11])=[O:9])=[CH:4][N:3]=1.[CH3:12][CH:13]([N:15]1[CH2:21][CH2:20][CH2:19][NH:18][CH2:17][CH2:16]1)[CH3:14].C(N(C(C)C)C(C)C)C>ClCCl>[CH3:12][CH:13]([N:15]1[CH2:21][CH2:20][CH2:19][N:18]([C:2]2[N:7]=[CH:6][C:5]([C:8]([O:10][CH3:11])=[O:9])=[CH:4][N:3]=2)[CH2:17][CH2:16]1)[CH3:14]Participants
Procedure
A solution of methyl 2-chloropyrimidine-5-carboxylate (209 mg, 1.21 mmol) in dichloromethane (4.00 ml) was added to a stirred solution of 1-propan-2-yl-1,4-diazepane (172 mg, 1.21 mmol) and N-ethyl-N-propan-2-ylpropan-2-amine (0.523 ml, 3.02 mmol) in dichloromethane (4.00 ml) at 25° C. The resulting solution was stirred at ambient temperature for 18 h. The reaction mixture was evaporated to dryness and redissolved in MeOH (20 mL) and the crude product was purified by ion exchange chromatography, using an SCX column. The desired product was eluted from the column using 7M NH3/MeOH and evaporated to dryness to afford methyl 2-(4-propan-2-yl-1,4-diazepan-1-yl)pyrimidine-5-carboxylate (267 mg, 79%) as a cream oil which crystallised on standing. This was used directly with no further purification.
Workup
- customThe reaction mixture was evaporated to dryness
- dissolutionredissolved in MeOH (20 mL)
- customthe crude product was purified by ion exchange chromatography
- washThe desired product was eluted from the column
- customevaporated to dryness
Sources & evidence
- ORD record
- ord-e83e41676b054c47aea867e70fbeec6b
- Source dataset
- uspto-grants-2012_03
- Patent number
- US08129391B2
Reaction notes
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