Yang T, Dangi BB, Thomas AM, Sun BJ, Chou TJ, Chang AHH, Kaiser RI. Gas-Phase Synthesis of 1-Silacyclopenta-2,4-diene.
Angew Chem Int Ed Engl 2016;
55:7983-7. [PMID:
27219669 DOI:
10.1002/anie.201602064]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/09/2016] [Indexed: 11/08/2022]
Abstract
Silole (1-silacyclopenta-2,4-diene) was synthesized for the first time by the bimolecular reaction of the simplest silicon-bearing radical, silylidyne (SiH), with 1,3-butadiene (C4 H6 ) in the gas phase under single-collision conditions. The absence of consecutive collisions of the primary reaction product prevents successive reactions of the silole by Diels-Alder dimerization, thus enabling the clean gas-phase synthesis of this hitherto elusive cyclic species from acyclic precursors in a single-collision event. Our method opens up a versatile and unconventional path to access a previously rather obscure class of organosilicon molecules (substituted siloles), which have been difficult to access through classical synthetic methods.
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