Scope and Limitations of the Intermolecular Furan-Yne Cyclization
作者:Anna Zeiler、Michael J. Ziegler、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/adsc.201500081
日期:2015.5.4
Different types of alkynes were reacted with 2,5‐disubstituted furans in order to evaluate the scope of the intermolecular furan‐yne reaction. With ethynyl aryl ethers as starting materials, 2‐phenoxy phenols were accessible in moderate to good yields. A different reaction mode was observed for alkynes bearing electron‐withdrawing substituents. For these starting materials a cis‐selective hydroarylation
USE OF HETEROCYCLIC AMINO-ALCOHOL COMPOUNDS IN THE MANUFACTURE OF A MEDICAMENT FOR TREATMENT OF CNS DISEASES
申请人:G.D. SEARLE & CO.
公开号:EP0543919B1
公开(公告)日:1996-04-10
Metal-Free Oxidative Cyclization of Alkynyl Aryl Ethers to Benzofuranones
作者:Katharina Graf、Carmen L. Rühl、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/anie.201304813
日期:2013.11.25
Readily available phenols can be converted into substituted arylalkynylethers, which react with an N‐oxide as an oxidant and catalytic amounts of a Brønsted acid to provide benzofuranones. If non‐terminal alkynylethers are applied, a 1,2‐hydride shift takes place and phenyl acrylates are obtained. Thus activated alkynes can serve as α‐oxy carbene precursors even in the absence of a metal catalyst