Abstract
A range of structurally and functionally varied enantiopure cyclic and bicyclic guanidines has been prepared and evaluated in the enantioselective epoxidation of 3-tertbutoxycarbonylamino-4,4-dimethoxycyclohexa-2,5-dien- 1-one 1 using tert-butylhydroperoxide. Encouraging enantiomeric excesses were observed (up to 60%). Low enantiomeric excesses were also observed with 2-methylnaphthoquinone and trans-chalcone.
Original language | English |
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Pages (from-to) | 369-371 |
Number of pages | 3 |
Journal | Synlett |
Issue number | 3 |
Publication status | Published - Feb 2003 |
Keywords
- enantioselective
- epoxidation
- enones
- guanidines
- stereo selectivity