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Building block synthesis of predominantly (E) symmetrical and unsymmetrical 1,2-difluorostilbenes from 1,2-dibromo-1,2-difluoroethene

✍ Scribed by Eddarir, Said; Kajjout, Mohammed; Rolando, Christian

Book ID: 125433553
Publisher: Elsevier Science
Year: 2013
Tongue: French
Weight: 357 KB
Volume: 69
Category: Article
ISSN: 0040-4020
DOI: 10.1016/j.tet.2013.10.067

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## Abstract The enantiopure epoxides 2–6 were synthesized from 1,2;5,6‐di‐O‐isopropylidene‐D‐mannitol (1). The terminal epoxides 2 and 3 are available from the desoxy mannitol 9 in three steps. The __C__~2~‐symmetrical epoxides 4 and 5 were generated via the C‐4‐inverted alcohol 15. The __C__~2~‐sy