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Stereoselective Control in the Base-Catalyzed H/D Exchange of 5,6-Dimethylidene-2-bicyclo[2.2.n]alkanone Tricarbonyliron Complexes. Revision of the Structures of Tricarbonyliron Complexes of 5,6-Dimethylidenebicyclo[2.2.2]oct-2-ene and 5,6-Dimethylidenebicyclo[2.2.1]hept-2-ene

✍ Scribed by Charls A. Barras; Rymond Roulet; Pierre-Alain Carrupt; Fabienne Berchier; Pierre Vogel


Publisher
John Wiley and Sons
Year
1984
Tongue
German
Weight
897 KB
Volume
67
Category
Article
ISSN
0018-019X

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πŸ“œ SIMILAR VOLUMES


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The I-dimethoxymethyl-5,6-dimethylidene-7-oxabicyclo[2.2. I jhept-2-ene (9) has been prepared. On treatment with Fe,(CO),, the endocyclic double bond C(2)=C(3) was coordinated first giving the Corresponding exo-Fe(C0)4 complex 10. The latter reacted with Fe,(CO), and afforded cis-heptacarbonyl-p -[(

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## Abstract The __Friedel__‐__Crafts__ monoacylation of __trans__‐η‐[(1__RS__,2__RS__,4__SR__,5__SR__,6__RS__,7__SR__,8__SR__)‐__C__,5,6,__C__‐η:__C__,7,8,__C__‐η‐(5,6,7,8‐tetramethylidene‐2‐bicyclo[2.2.2]octyl acetate)]‐bis(tricarbonyliron) ((Β±)‐**5**) is highly stereoselective and yields __trans_

Chemo- and Stereoselective Coordination
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The endocyclic double bond C(2),C( ) in 5,6-dimethylidene-7-oxabicyclo[2.2.1]hept-2-ene (1) can be coordinated selectively on its exo-face before complexation of the exocyclic s-cis-butadiene moiety. Irradiation of Ru,(CO),, or Os,(CO),, in the presence of 1 gave tetracarbonyl[(lR,2R,3S,4S)-2,3-~-(5