Unprecedented anomalous stereochemistry of halogen additions to syn- and anti-9,9′-bibenzonorbornenylidenes
Autor: | Koichi Noda, Yoshiaki Sugihara, Juzo Nakayama |
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Rok vydání: | 2000 |
Předmět: | |
Zdroj: | Tetrahedron Letters. 41:8907-8911 |
ISSN: | 0040-4039 |
DOI: | 10.1016/s0040-4039(00)01604-x |
Popis: | Exclusive syn ( cis )-addition of Br 2 to syn -9,9′-bibenzonorbornenylidene ( 1 ) took place to give the corresponding vic -dibromide ( 3 ) quantitatively with retention of the configuration of 1 . Meanwhile, anti ( trans )-addition of Br 2 to anti -9,9′-bibenzonorbornenylidene ( 2 ) also occurred furnishing the same dibromide 3 quantitatively with inversion of the configuration of 2 . |
Databáze: | OpenAIRE |
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