Reaction equation
Cl.[NH2:2][C@H:3]1[CH2:8][CH2:7][C@H:6]([OH:9])[CH2:5][CH2:4]1.C(N1[C:19](=[O:20])[C:18]2=[CH:21][CH:22]=[CH:23][CH:24]=[C:17]2[C:16]1=[O:25])(OCC)=O.C(N(CC)CC)C>C(Cl)Cl.O>[OH:9][C@H:6]1[CH2:7][CH2:8][C@H:3]([N:2]2[C:19](=[O:20])[C:18]3[C:17](=[CH:24][CH:23]=[CH:22][CH:21]=3)[C:16]2=[O:25])[CH2:4][CH2:5]1Participants
6
Reactant 3
Product 1
Reagents, catalysts & solvents 2
Procedure
A mixture of trans-4-aminocyclohexanol hydrochloride (1.0 g, 6.6 mmol) (Aldrich, Cat. #263761), N-carbethoxyphthalimide (1.4 g, 6.6 mmol) (Aldrich, Cat. #C5459), and triethylamine (2.0 mL, 14 mmol) in methylene chloride (10 mL) was stirred at r.t. overnight. The mixture was diluted with water, and extracted with ethyl acetate (3×20 mL). The combined organic layers were dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexanes to afford the desired product (1.2 g, 76%).
Workup
- extractionextracted with ethyl acetate (3×20 mL)
- dry with materialThe combined organic layers were dried over Na2SO4
- filtrationfiltered
- concentrationconcentrated under reduced pressure
- customThe residue was purified by flash chromatography on a silica gel column with ethyl acetate in hexanes
Sources & evidence
- ORD record
- ord-13f3dec127c3446690ea84dccfa832ff
- Source dataset
- uspto-grants-2013_07
- Patent number
- US08481732B2
Linked notes
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