[1+4]-Cycloadditions of silylenes to 2,4,6-tri-tert-butyl-1,3,5-triphosphabenzene

Clendenning, Scott B, Gehrhus, Barbara, Hitchcock, Peter B, Moser, Daniel F, Nixon, John F and West, Robert (2002) [1+4]-Cycloadditions of silylenes to 2,4,6-tri-tert-butyl-1,3,5-triphosphabenzene. Journal of the Chemical Society, Dalton Transactions, 4 (4). pp. 484-490. ISSN 1472-7773

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2,4,6-Tri-tert-butyl-1,3,5-triphosphabenzene 1 undergoes [1 + 4]-cycloaddition with the stable bis(amino)silylenes Si[(NCH2But)2C6H4-1,2] 3, Si[(NBut)2C2H2] 4 and Si[(NBut)2C2H4] 7 to afford the structurally characterised 5, 6 and 11. The intermediate aminosilylsilylene resulting from the dissociation of the disilene [Si{(NBut)2C2H4}]49 was trapped as its [1 + 4]-cycloadduct with 1, which was also structurally characterised. The reversibility of the cycloaddition was demonstrated for 5 through reaction with [Mo(CO)4(nbd)] to afford [Mo(CO)3(η6-P3C3But3)] (13) and a mixture of cis- (14a) and trans-[Mo(CO)4(3)2] (14b) of which 14b has been structurally characterised by a single crystal X-ray diffraction study.

Item Type: Article
Additional Information: JFN directed the synthetic work at Sussex in collaboration with BG and co authored the publicaton, novel cyloaddition reactions were characterised
Schools and Departments: School of Life Sciences > Chemistry
Depositing User: John Nixon
Date Deposited: 06 Feb 2012 20:53
Last Modified: 02 May 2012 14:28
URI: http://sro.sussex.ac.uk/id/eprint/28620
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