67945-96-4Relevant articles and documents
Reactions of Styrylmalonates with Aromatic Aldehydes: Detailed Synthetic and Mechanistic Studies
Borisov, Denis D.,Novikov, Roman A.,Tomilov, Yury V.
, p. 4457 - 4471 (2021/04/02)
Reactions of styrylmalonates with aromatic aldehydes in the presence of Lewis and Br?nsted acids and their regularities have been studied in detail. Approaches to the synthesis of various polysubstituted 5,6-dihydropyran-2-ones, indenes, aryl-containing d
Nickel-catalyzed dehydrogenative [4 + 2] cycloaddition of 1,3-dienes with nitriles
Ohashi, Masato,Takeda, Ippei,Ikawa, Masashi,Ogoshi, Sensuke
supporting information; experimental part, p. 18018 - 18021 (2011/12/13)
Pyridines, which comprise one of the most important classes of the six-membered heterocyclic compounds, are widely distributed in nature, and the transition-metal-catalyzed [2 + 2 + 2] cycloaddition reaction of two alkynes and a nitrile is one of the most powerful methods for preparing versatile, highly substituted pyridine derivatives. However, the lack of chemo- and regioselectivity is still a crucial issue associated with fully intermolecular [2 + 2 + 2] cycloaddition. The present study developed the Ni(0)-catalyzed intermolecular dehydrogenative [4 + 2] cycloaddition reaction of 1,3-butadienes with nitriles to give a variety of pyridines regioselectively.
Titanocene(II)-promoted cross-coupling of unsaturated compounds
Ogata, Akitoshi,Nemoto, Masami,Arai, Koutarou,Kobayashi, Kenji,Tsubouchi, Akira,Takeda, Takeshi
, p. 878 - 880 (2007/10/03)
Vinyl pivalate in the presence of the titanocene(II) reagent Cp 2Ti[P(OEt)3]2 reacts both with nonpolar C≡C triple bonds and with polar C=O double bonds, to produce conjugated dienes and allylic alcohols, respectively. Similar alkenylation also takes place when (Z)-alkenyl sulfones are treated with alkynes and carbonyl compounds. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.