26613-38-7Relevant articles and documents
Decarbonylative diarylation reaction of N-tosylated α-amino acids
Seong, Mi Ra,Lee, Hong Jung,Kim, Jae Nyoung
, p. 6219 - 6222 (2007/10/03)
The reaction of various N-tosylated α-amino acids with arenes in the presence of sulfuric acid afforded the corresponding diarylated derivatives in moderate yields, which were generated via decarbonylative arylation followed by Friedel-Crafts reaction of the generated tosylamide derivatives.
Direct construction of quaternary carbons from carbonyl compounds utilizing low-valent vanadium complexes
Kataoka, Yasutaka,Makihira, Isamu,Akiyama, Hiroaki,Tani, Kazuhide
, p. 9525 - 9540 (2007/10/03)
Direct geminal diallylation of a carbonyl compound with allyl bromide has been achieved in the presence of a low-valent vanadium complex and zinc. The diallylation has been found to proceed stepwise and the two allyl groups were introduced successively. By applying this method, one-pot synthesis of asymmetric quaternary carbons has been accomplished. As the first alkylating reagent a combination of allyl bromide and zinc, a Grignard reagent, or an alkyllithium can be used. The second one should be the combination of a low- valent vanadium(II) complex and allyl bromide, benzyl bromide, or propargyl bromide. Strong oxophilicity of the low-valent vanadium facilitated the deoxygenative allylation.
Vanadium(II) complexes as efficient reagents for direct construction of asymmetric quaternary carbons from carbonyl compounds
Kataoka, Yasutaka,Makihira, Isamu,Akiyama, Hiroaki,Tani, Kazuhide
, p. 6495 - 6498 (2007/10/02)
Direct geminal diallylation of propiophenone with allyl bromide has been achieved in the presence of vanadium(II) species. By applying this method, direct construction of asymmetric quaternary carbons from propiophenone has been accomplished. Strong oxophilicity of the low-valent vanadium facilitated the deoxygenative reaction. The present reaction is characteristic of vanadium complexes.