Gold catalysis: five new bonds by a domino hydroarylation/cycloisomerization
作者:A. Stephen K. Hashmi、Li Grundl
DOI:10.1016/j.tet.2005.03.103
日期:2005.6
with ethynylvinyl ketones bearing alkyl groups on the alkene led to interesting phenols of the indan-1-one-type by a domino hydroarylation/cycloisomerization. The yields were moderate but higher than in longer routes described before. With ethynylvinyl ketones that have an aryl substituent, the chemoselectivity of the reaction was different. Then products from an initial reaction at the ethynyl group
Gold Catalysis: Efficient Synthesis and Structural Assignment of Jungianol andepi-Jungianol
作者:A. Stephen K. Hashmi、Li Ding、Jan W. Bats、Peter Fischer、Wolfgang Frey
DOI:10.1002/chem.200305092
日期:2003.9.22
Starting from 2-methylfuran and crotonaldehyde, both jungianol and epi-jungianol were prepared by a six-step sequence including a gold-catalyzed arene synthesis and a photochemical S(N)2-like reduction with lithium aluminum hydride. Not a single protective group was needed in the entire synthesis. With both diastereomers in hand, the stereochemicalassignment in the literature could be corrected by