- High diastereoselectivity in the yang photocyclization via remote hydrogen abstraction reaction
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1-Benzoyl-1-(o-alkoxyphenyl)cyclopropanes undergo Yang photocyclization to form dihydrobenzopyranols in a stereospecific manner. The cyclopropyl group at alpha position to carbonyls gives not only a bias in the most stable geometries of the starting ketones but also conformational restriction on geometries of biradical intermediates. More importantly, intramolecular hydrogen bonds seem to give an additional effect on conformational control of the biradical reactivity.
- Jang, Mi,Park, Bong Ser
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p. 1509 - 1514
(2016/10/09)
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- PIPERAZINE DERIVATIVES WHICH EXHIBIT ACTIVITY AS SEROTONIN AND NORADRENALINE RE-UPATKE INHIBITORS
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A compound of formula (I), wherein R1 is H; R2 is aryl, het, C3-8cycloalkyl, C1-6alkyl, (CH2)zaryl or R4, wherein each of the cycloalkyl, aryl, het and R4 groups is op
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Page/Page column 47
(2010/02/13)
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