Atropisomeric sulphur compounds in organic synthesis: generation and reactions of the carbanions of dinaphtho[2,1-d:1′,2′-f][1,3]dithiepine and its oxides
Abstract
Oxidation of dinaphtho[2,1-d:1′,2′-f][1,3]dithiepine (2) gives a single diastereoisomeric sulphoxide (1) which reacts diastereospecifically with electrophiles at variance with the unoxidized substrate (2) and other combinations of oxides (4),(6), and (7) which afford diastereoisomeric mixtures of products.
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