Rhodium??Catalyzed Dehydrocoupling of Fluorinated Phosphine–Borane Adducts: Synthesis, Characterization, and Properties of Cyclic and Polymeric …

TJ Clark, JM Rodezno, SB Clendenning…

Index: Clark, Timothy J.; Rodezno, Jose M.; Clendenning, Scott B.; Aouba, Stephane; Brodersen, Peter M.; Lough, Alan J.; Ruda, Harry E.; Manners, Ian Chemistry - A European Journal, 2005 , vol. 11, # 15 p. 4526 - 4534

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Citation Number: 71

Abstract

Abstract The dehydrocoupling of the fluorinated secondary phosphine–borane adduct R 2 PH⋅ BH 3 (R= p-CF 3 C 6 H 4) at 60 C is catalyzed by the rhodium complex [{Rh (μ-Cl)(1, 5- cod)} 2] to give the four-membered chain R 2 PH-BH 2-R 2 P-BH 3. A mixture of the cyclic trimer [R 2 P-BH 2] 3 and tetramer [R 2 P-BH 2] 4 was obtained from the same reaction at a more elevated temperature of 100 C. The analogous rhodium-catalyzed dehydrocoupling ...