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5,6-DIHYDRO-2H-OXAPHOSPHORINE-2-OXIDES BY HALOGENATION OF 2-CHLORO-1,3-ALKADIENYLPHOSPHONIC DIALKYL ESTERS

✍ Scribed by Angelov, Christo M.; Christov, Valerij Ch.; Petrova, Jordanka; Kirilov, Marko


Book ID
118029554
Publisher
Informa UK (Taylor & Francis)
Year
1983
Weight
332 KB
Volume
17
Category
Article
ISSN
0308-664X

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## Abstract The reactions of monosubstituted 1,2‐alkadienylphosphonates with PhSeCl in THF or dioxane/H~2~O (10:1) at 70 Β°C afforded the selenochlorination products [(__Z__)‐3‐chloro‐2‐(phenylselanyl)‐1‐alkenyl]phosphonates with very high chemo‐ and stereoselectivity, whereas the same reaction with