Dicyclohepta[cd,gh]pentalene—A New Pyren
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Dr. Henning Reel; Prof. Dr. Emanuel Vogel
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Article
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1972
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John Wiley and Sons
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English
⚖ 261 KB
152-155"C, which is recyclized to (3a) by phosgene in the presence of a tertiary amine. 3,4-Dichloroaniline reacts with (3a) even at ca. 20"C, giving the monothiotriuret (6a), m.p. 163°C. (3a) can be prepared from (la) and phenoxycarbonyl isocyanate in boiling toluene even in absence of a tertiary b