16222-44-9Relevant articles and documents
A study of diketopiperazines as electron-donor initiators in transition metal-free haloarene-arene coupling
Cumine, Florimond,Zhou, Shengze,Tuttle, Tell,Murphy, John A.
, p. 3324 - 3336 (2017/04/21)
Several diketopiperazines have been shown to promote carbon-carbon coupling between benzene and aryl halides in the presence of potassium tert-butoxide and without the assistance of a transition metal catalyst. The structure of the diketopiperazine has an influence on its reductive potential and can help to promote the coupling of the more challenging aryl bromides with benzene.
POLY-N-HETEROCYCLIC CARBENE TRANSITION METAL COMPLEXES AND N-HETEROCYCLIC CARBENE TRANSITION METAL COMPLEXES FOR CARBON-SULFUR AND CARBON-OXYGEN COUPLING REACTIONS
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Page/Page column 24-25, (2009/01/20)
Methods for carbon-sulfur (C S) or carbon-oxygen (C-O) coupling reactions are provided. The methods involve the use of a transition metal complex comprising a heterocyclic carbene ligand complexed with a transition metal. Transition metal complexes comprising a heterocyclic carbene ligand complexed with nickel are also provided. The nickel heterocylic carbene complexes may be used for C-S or C-O coupling reactions.
One-pot synthesis of symmetrical di- and triarylamines using urea as the source of the amino group
Artamkina, Galina A.,Sergeev, Alexey G.,Stern, Mikhail M.,Beletskaya, Irina P.
, p. 235 - 238 (2007/10/03)
A simple one-pot palladium-catalyzed reaction for the conversion of aryl halides to aryl amines using urea as an ammonia equivalent is reported. Arylation of urea in the presence of Pd2dba3, t-Bu 3P·HBF4 and t-BuOK in dioxane gives di- and triarylamines in 65-95% yields. Georg Thieme Verlag Stuttgart.
Urea as ammonia equivalent in aryl halides amination catalyzed by palladium complexes
Artamkina,Sergeev,Shtern,Beletskaya
, p. 1683 - 1689 (2007/10/03)
Urea reaction with nonactivated aryl bromides and chlorides under catalysis with palladium complexes led to the formation in 65-95% yield of triarylamines from para-and meta-substituted aryl halides and of diarylamines from ortho-isomers.
Palladium/P(t-Bu)3-catalyzed synthesis of aryl t-butyl ethers and application to the first synthesis of 4-chlorobenzofuran
Watanabe, Makoto,Nishiyama, Masakazu,Koie, Yasuyuki
, p. 8837 - 8840 (2007/10/03)
Pd/P(t-Bu)3 catalyzed reaction of aryl halides with sodium t-butoxide effectively to give aryl t-butyl ethers. The high catalytic activity realized the formation of aryl t-butyl ethers from not only electron-deficient aryl halides but also electron-rich aryl halides. Moreover, the first synthesis of 4-chlorobenzofuran was attained utilizing the selective mono-t-butoxylation of aryl dihalide.
