Dehydrocoupling Reactions of Borane− Secondary and− Primary Amine Adducts Catalyzed by Group-6 Carbonyl Complexes: Formation of Aminoboranes and …

…, T Kawaguchi, T Kakizawa, H Ogino

Index: Kawano, Yasuro; Uruichi, Mikio; Shimoi, Mamoru; Taki, Seitaro; Kawaguchi, Takayuki; Kakizawa, Taeko; Ogino, Hiroshi Journal of the American Chemical Society, 2009 , vol. 131, # 41 p. 14946 - 14957

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Citation Number: 95

Abstract

Photoirradiation of a solution of BH3· NHR2 (1a: R= Me, 1b: R= 1/2C4H8, 1c: R= 1/2C5H10, 1f: R= Et) containing a catalytic amount of a group-6 metal carbonyl complex,[M (CO) 6](M= Cr, Mo, W), led to dehydrogenative B− N covalent bond formation to produce aminoborane dimers,[BH2NR2] 2 (2a− c, f), in high yield. During these reactions a borane σ complex,[M (CO) 5 (η1-BH3· NHR2)](3), was detected by NMR spectroscopy. Similar catalytic ...