Synthesis and p-Facial Selectivity for the Nucleophilic Addition on the Carbonyl of Monothia-dioxa-Cage Compounds
碩士 === 國立交通大學 === 應用化學系 === 90 === The synthesis of the monothia-dioxa-cage compounds 20 and 21 have been accomplished by chemical transformation from the trioxa-cage compounds 18 and 19. Reactions of the monothia-dioxa-cage compounds 20 and 21 with various nucleophiles exclusi...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2001
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| Online Access: | http://ndltd.ncl.edu.tw/handle/84706559633360875901 |
| Summary: | 碩士 === 國立交通大學 === 應用化學系 === 90 === The synthesis of the monothia-dioxa-cage compounds 20 and 21 have been accomplished by chemical transformation from the trioxa-cage compounds 18 and 19.
Reactions of the monothia-dioxa-cage compounds 20 and 21 with various nucleophiles exclusively gave the corresponding products which were obtained by nucleophilic addition on the carbonyl group from the face anti to the sulfur atom. The major effect of these results may be attributed to the torsional effect.
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