641609-73-6Relevant academic research and scientific papers
A Convenient Method for the Preparation of Symmetrical or Unsymmetrical Ethers by the Coupling of Two Alcohols via a New Type of Oxidation-reduction Condensation Using Tetrafluoro-1,4-benzoquinone
Shintou, Taichi,Mukaiyama, Teruaki
, p. 984 - 985 (2003)
A new type of oxidation-reduction condensation by using tetrafluoro-1,4-benzoquinone (fluoranil), alcohols and alkoxydiphenylphosphines, in situ formed from nBuLi-treated alcohols and chlorodiphenylphosphine, proceeded smoothly to afford the corresponding symmetrical or unsymmetrical ethers in good to high yields.
First enantiomerically pure C70-adducts with a non-inherently chiral addition pattern
Kraszewska, Agnieszka,Rivera-Fuentes, Pablo,Thilgen, Carlo,Diederich, Francois
scheme or table, p. 386 - 396 (2009/06/28)
By addition of an enantiomerically pure nitrile oxide to C70, four chiral isoxazolo[70]fullerene isomers were prepared and isolated in pure state: two constitutional isomers resulting from addition to one of the bonds radiating from the polar p
Efficient methods for the preparation of alkyl-aryl and symmetrical or unsymmetrical dialkyl ethers between alcohols and phenols or two alcohols by oxidation-reduction condensation
Shintou, Taichi,Mukaiyama, Teruaki
, p. 7359 - 7367 (2007/10/03)
Oxidation-reduction condensation via alkoxydiphenylphosphines (diphenylphosphinite esters) (1), generated in situ from chlorodiphenylphosphine (2) and alcohols, 2,6-dimethyl-1,4-benzoquinone (3), and phenols proceeds smoothly to afford alkyl-aryl ethers in good to high yields under neutral conditions. In a similar fashion, a new and efficient method for the preparation of symmetrical or unsymmetrical dialkyl ethers in good to high yields is established via tetrafluoro-1,4-benzoquinone (fluoranil) (4), alcohols, and 1 formed in situ from nBuLi-treated alcohols and 2. This method is applicable also to the etherification of chiral secondary or tertiary alcohols with retention or inversion of configurations. The inverted ethers are afforded by treating chiral alkoxydiphenylphosphines and achiral alcohols, while the reaction of achiral alkoxydiphenylphosphines and chiral alcohols forms retained ethers.
