A Flow Microreactor System Enables Organolithium Reactions without Protecting Alkoxycarbonyl Groups
作者:Aiichiro Nagaki、Heejin Kim、Yuya Moriwaki、Chika Matsuo、Jun-ichi Yoshida
DOI:10.1002/chem.201000876
日期:——
A flowmicroreactor system consisting of micromixers and microtube reactors provides an effective tool for the generation and reactions of aryllithiums bearing an alkoxycarbonyl group at para‐, meta‐, and ortho‐positions. Alkyl p‐ and m‐lithiobenzoates were generated by the I/Li exchange reaction with PhLi. The Br/Li exchange reactions with sBuLi were unsuccessful. Subsequent reactions of the resulting
Gold-Catalysed Oxyarylation of Styrenes and Mono- and<i>gem</i>-Disubstituted Olefins Facilitated by an Iodine(III) Oxidant
作者:Liam T. Ball、Guy C. Lloyd-Jones、Christopher A. Russell
DOI:10.1002/chem.201103061
日期:2012.3.5
1‐Hydroxy‐1,2‐benziodoxol‐3(1H)‐one (IBA) is an efficient terminal oxidant for gold‐catalysed, three‐component oxyarylation reactions. The use of this iodine(III) reagent expands the scope of oxyarylation to include styrenes and gem‐disubstituted olefins, substrates that are incompatible with the previously reported Selectfluor‐based methodology. Diverse arylsilane coupling partners can be employed
Gold-Catalyzed Oxidative Coupling Reactions with Aryltrimethylsilanes
作者:William E. Brenzovich、Jean-François Brazeau、F. Dean Toste
DOI:10.1021/ol102194c
日期:2010.11.5
During continuing studies with a novel oxidative gold oxyarylation reaction, arylsilanes were found to be competent coupling partners, providing further evidence for an intramolecular electrophilic aromatic substitution mechanism. While providing yields complementary to those of the previously described boronic acid methods, the use of trimethylsilanes reduces the observation of homocoupling byproducts
Synthesis and diels-alder reactions of e-1-trimethylsilylbuta-1,3-diene
作者:Michael E. Jung、Bruce Gaede
DOI:10.1016/0040-4020(79)87006-4
日期:1979.1
A novel synthesis of E-1-trimethylsilylbuta-1,3-diene (1) has been achieved, and its Diels-Alderreactions with maleic anhydride, diethyl maleate, dimethyl fumarate, methyl propiolate, acrolein and acrylonitrile have been investigated. The structures of the products were studied to determine the stereoselectivity and regioselectivity of the reactions of this diene. In all cases with monosubstituted