Conjugateddienes underwent Ni-catalyst-promoted 1,2-hydrocarboxylation in a 1:1ratio with carbon dioxide under atmospheric pressure in the presence of diisobutylaluminum hydride (DIBAL-H) to give the corresponding β,γ-unsaturated carboxylic acids, without dimerization or oligomerization of the conjugateddiene.
Efficient One-to-One Coupling of Easily Available 1,3-Dienes with Carbon Dioxide
作者:Jun Takaya、Kota Sasano、Nobuharu Iwasawa
DOI:10.1021/ol2002094
日期:2011.4.1
reaction of atmospheric pressure carbon dioxide with 1,3-dienes is realized for the first time through PSiP-pincer type palladium-catalyzed hydrocarboxylation. The reaction is applicable to various 1,3-dienes including easily available chemical feedstock such as 1,3-butadiene and isoprene. This protocol affords a highly useful method for the synthesis of β,γ-unsaturated carboxylic acid derivatives from
The effect of alkyl substituents in 2-alkylbutadienes on their hydromagnesiation with alkyl-magnesium halides was studied.
Baker,R. et al., Journal of the Chemical Society. Perkin transactions I, 1976, p. 1809 - 1814
作者:Baker,R. et al.
DOI:——
日期:——
Cp<sub>2</sub>TiCl<sub>2</sub>-Catalyzed Regioselective Hydrocarboxylation of Alkenes with CO<sub>2</sub>
作者:Peng Shao、Sheng Wang、Chao Chen、Chanjuan Xi
DOI:10.1021/acs.orglett.6b00665
日期:2016.5.6
Cp2TiCl2-catalyzed regioselective hydrocarboxylation of alkenes with CO2 to give carboxylic acids in high yields has been developed in the presence of iPrMgCl. The reaction proceeds with a wide range of alkenes under mild conditions. Styrene and its derivatives can transform to α-aryl carboxylic acids, and aliphatic alkenes can transform to form alkanoic acids.