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The Synthesis and Reactivity of High...

Hiranandani, Rashi.

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The Synthesis and Reactivity of Highly Electrophilic Phosphonium Cations.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The Synthesis and Reactivity of Highly Electrophilic Phosphonium Cations./
作者:	Hiranandani, Rashi.
面頁冊數:	107 p.
附註:	Source: Masters Abstracts International, Volume: 54-06.
Contained By:	Masters Abstracts International54-06(E).
標題:	Inorganic chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1595285
ISBN:	9781321939194

The Synthesis and Reactivity of Highly Electrophilic Phosphonium Cations.
Hiranandani, Rashi.

The Synthesis and Reactivity of Highly Electrophilic Phosphonium Cations. - 107 p.

Source: Masters Abstracts International, Volume: 54-06.

Thesis (M.Sc.)--University of Toronto (Canada), 2015.

Main group Lewis acids are used in a variety of Lewis acid-mediated transformations and as co-catalysts for polymerization reactions. In recent years, group XIII Lewis acids such as BF3, AlCl3, and B(C6F5)3 have been under active investigation for their catalytic applications. Extending this chemistry to group XV elements, our group recently showed that the phosphonium cation, [(C6F 5)3PF][B(C6F5)4] displayed significant Lewis acidity. [(C6F5)3PF][B(C 6F5)4] was shown to perform catalytic hydrodefluorination of fluoroalkanes; hydrosilylation of alkenes, ketones, imines and nitriles; and transfer hydrogenation of olefins. Similar reactivity was observed for [(SIMes)PFPh2][B(C6F5)4] 2, which acquires its Lewis acidity from dicationic charge rather than perfluorinated substituents. Herein, we describe our efforts towards hydrogen activation by [(C6F5)3PF][B(C6F 5)4], especially for hydrogenation of imines. Furthermore, the facile synthesis of a library of bis-phosphonium systems and their applications in Lewis acid-mediated catalysis are discussed. The synthesis of a chiral bis-phosphonium which may have applications in asymmetric catalysis is also described.

ISBN: 9781321939194Subjects--Topical Terms:

3173556
Inorganic chemistry.

The Synthesis and Reactivity of Highly Electrophilic Phosphonium Cations.
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502 $a Thesis (M.Sc.)--University of Toronto (Canada), 2015.
520 $a Main group Lewis acids are used in a variety of Lewis acid-mediated transformations and as co-catalysts for polymerization reactions. In recent years, group XIII Lewis acids such as BF3, AlCl3, and B(C6F5)3 have been under active investigation for their catalytic applications. Extending this chemistry to group XV elements, our group recently showed that the phosphonium cation, [(C6F 5)3PF][B(C6F5)4] displayed significant Lewis acidity. [(C6F5)3PF][B(C 6F5)4] was shown to perform catalytic hydrodefluorination of fluoroalkanes; hydrosilylation of alkenes, ketones, imines and nitriles; and transfer hydrogenation of olefins. Similar reactivity was observed for [(SIMes)PFPh2][B(C6F5)4] 2, which acquires its Lewis acidity from dicationic charge rather than perfluorinated substituents. Herein, we describe our efforts towards hydrogen activation by [(C6F5)3PF][B(C6F 5)4], especially for hydrogenation of imines. Furthermore, the facile synthesis of a library of bis-phosphonium systems and their applications in Lewis acid-mediated catalysis are discussed. The synthesis of a chiral bis-phosphonium which may have applications in asymmetric catalysis is also described.
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