Reaction equation
[CH3:1][C:2]1[S:3][C:4]2[CH:10]=[C:9]([S:11](Cl)(=[O:13])=[O:12])[CH:8]=[CH:7][C:5]=2[N:6]=1.[CH2:15]([NH:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH3:27])[CH2:16][CH2:17][CH2:18][CH2:19][CH3:20].CCCCCC>C(Cl)(Cl)Cl.C(OCC)(=O)C>[CH2:22]([N:21]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH3:20])[S:11]([C:9]1[CH:8]=[CH:7][C:5]2[N:6]=[C:2]([CH3:1])[S:3][C:4]=2[CH:10]=1)(=[O:13])=[O:12])[CH2:23][CH2:24][CH2:25][CH2:26][CH3:27]Participants
Procedure
A solution of compound Compound 2 (5.0 g, 20.2 mmol) from step (b) of Example 1 dissolved in chloroform (30 ml) was added drop wise to a solution of dihexylamine (4.5 g, 24.2 mmol) in chloroform (20 ml). The combined mixture was stirred at room temperature for 2 hours. The reaction mixture was then washed with water (2×, 50 ml) and brine (1×, 50 ml). The organic layer was then dried with sodium sulfate and evaporated. The residue thus obtained was suspended in ca. 5 ml hot ethyl acetate and this solution was then slowly added to 40 ml hexane. The white solid that precipitated was filtered and the filtrate evaporated to dryness to provide 7.76 g (97%) of Compound 20 as a syrupy liquid, Rf=0.43 (30% ethyl acetate in hexane). The structure of this compound is given below:
Workup
- washThe reaction mixture was then washed with water (2×, 50 ml) and brine (1×, 50 ml)
- dry with materialThe organic layer was then dried with sodium sulfate
- customevaporated
- customThe residue thus obtained
- customThe white solid that precipitated
- filtrationwas filtered
- customthe filtrate evaporated to dryness
Sources & evidence
- ORD record
- ord-03c164f795cf41fab7f5467591e93c57
- Source dataset
- uspto-grants-2014_06
- Patent number
- US08759526B2
Linked notes
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