Efficient intramolecular 2 + 2 photocycloaddition of styrene derivatives towards cyclophanes
β Scribed by Nishimura, Jun; Doi, Hirofumi; Ueda, Eiji; Ohbayashi, Akihiro; Oku, Akira
- Book ID
- 126895197
- Publisher
- American Chemical Society
- Year
- 1987
- Tongue
- English
- Weight
- 380 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
Novel 1,8-naphthylene-bridged paraand metacyclophanes were efficiently synthesized as a single isomer by the intramolecular [2 + 21 photocycloaddition of 1,8-bis(p-and m-vinylphenyl)naphthalenes, respectively. By this method, syn-cyclophanes were selectively obtained in both cases.
There are two possible explanations for the high yields in the intramolecular [2 2] photocycloaddition of compounds 3a-d in which two styrene moieties are bridged by an oligooxyethylene linkage: one is the electronic effects of phenoxy oxygen atoms at the para-position of the vinyl group and the oth
Beim Erhitzen des Bisβstyryl Derivates **1** in siedendem __o__βDichlorbenzol entstehen ΓΌberraschenderweise in hoher Ausbeute die Aza[3.1.1]bicycloheptane **2** und **3**, deren Struktur durch ^1^Hβ und ^13^Cο£ΏNMR.βSpektren unter Verwendung eines Computerprogrammes eindeutig bestimmt wurde. Auf analo