(Phenyl)[o-(trimethylsilyl)phenyl]iodonium triflate. A new and efficient precursor of benzyne
作者:Tsugio Kitamura、Masakatsu Yamane
DOI:10.1039/c39950000983
日期:——
(Phenyl)[o-(trimethylsilyl)phenyl]iodonium triflate readily prepared from o-bis(trimethylsilyl)benzene and the hypervalent iodine(III) reagent [Phl(OAc)2·2TfOH] shows excellent formation of benzyne under mild and neutral conditions and efficiently provides adducts with typical trapping agents, e.g. furan, anthracene, diphenylisobenzofuran and tetraphenylcyclopentadienone.
Synthesis of 1,2-Bis(trimethylsilyl)benzene Derivatives from 1,2-Dichlorobenzenes Using a Hybrid Metal Mg/CuCl in the Presence of LiCl in 1,3-Dimethyl-2-imidazolidinone
and safe synthesis of 1,2-bis(trimethylsilyl)benzene from 1,2-dichlorobenzene and Me3SiCl was achieved by use of a hybrid metal of Mg and CuCl in the presence of LiCl in 1,3-dimethyl-2-imidazolidinone (DMI). This method does not require a toxic HMPA, provides a high yield of the product under mild conditions, and is also applied to synthesis of substituted 1,2-bis(trimethylsilyl)benzenes and poly(