Electrophilic additions to tetradehydrod
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Herges, Rainer ;Neumann, Helfried
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Article
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1995
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John Wiley and Sons
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English
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## Abstract 5,12:6,11βDi[1,2]benzenodibenzo[a,e]cyclooctene (tetradeβhydrodianthracene, TDDA) (1) reacts with halogens to give transannular (__anti__) 4, 5 and ringβopened (__syn__) products 6, 7. The product ratio shows a remarkable solvent dependence. Solvents of medium polarity favor __anti__ ad