Atom-Transfer Radical Addition of Alcohols to Aliphatic Alkynes
作者:Yingxia Xiao、Zhong-Quan Liu
DOI:10.1021/acs.joc.9b00804
日期:2019.8.2
An intermolecular hydrogen bond-promoted atom-transfer radicaladdition of simple alcohols to aliphatic alkynes is demonstrated here. Through this strategy, a variety of allyl alcohols can be synthesized in high selectivity and yields. Furthermore, this work reveals the relationship between selectivity and the substrate.
Palladium-Catalyzed Carbon Dioxide Elimination−Fixation Reaction of 4-Methoxycarbonyloxy-2-buten-1-ols
作者:Masahiro Yoshida、Yusuke Ohsawa、Masataka Ihara
DOI:10.1021/jo0353280
日期:2004.3.1
A new type of palladium-catalyzed CO2 recycling reaction using allylic carbonates is described. Reaction of trans-4-methoxycarbonyloxy-2-buten-1-ols in the presence of a palladium catalyst produces cyclic carbonates having a vinyl group via a CO2 elimination-fixation process. A variety of allylic carbonates participate in the reaction giving cyclic carbonates with high efficiencies. Stereoselective construction of trans-cyclic carbonates is achieved by using nonsymmetric substrates. An enantiospecific reaction proceeds to give chiral cyclic carbonate when a chiral methyl-substituted substrate is subjected to the reaction conditions.
MILLER, R. B.;AL-HASSAN, M. I., J. ORG. CHEM., 1983, 48, N 22, 4113-4116