Fifteen title compounds, e.g. (I)-(III), are prepared essentially as described previously. Evaluation of their absorption, emission and laser properties shows that N-allyl substituted derivatives (Ia) and (IIa) have high fluorescence quantum yields and laser efficiencies of 137 and 140%, respectivel
ChemInform Abstract: Regioselective Synthesis, X-Ray Structure, and Reactivity of a Tricyclic Tetrasulfone, 1,3,5,7-Tetramethyl-2,4,6,8,9,10-hexathiatricyclo [3.3.1.13,7]decane 2,2,4,4,6,6,8,8-Octaoxide, Derived from Tetramethylhexathiaadamantane.
โ Scribed by Glen P. Miller; Ingyu Jeon; A. Nikki Faix; Jerry P. Jasinski; Andreas J. Athans; Mark C. Tetreau
- Publisher
- John Wiley and Sons
- Year
- 2000
- Weight
- 39 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0931-7597
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In order to prepare new tacrine-like compounds, the title compounds (VII), (X) and (XV) are synthesized. The synthetic pathway to (VII) represents a shorter and more suitable approach to prepare tacrine metabolites. An alternative route from (VIb) to compound (VIII), which exhibits very strong DNA b
formed separately and the Pe stabilized as a bisphosphane complex['0T. The complex with tris(dimethy1amino)phosphane, the 1,1,1,3,3,3-hexakis(dimethylamino)-l?~~,32.~-triphospha-2-enium tetraphenylborate 2, is particularly easy to handle"']. In order to accept Pe from 2, however, the olefin must be