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ChemInform Abstract: Efficient Assembly of Allenes, 1,3-Dienes, and 4H-Pyrans by Catalytic Regioselective Nucleophilic Addition to Electron-Deficient 1,3-Conjugated Enynes.

✍ Scribed by Xiuzhao Yu; Hongjun Ren; Yuanjing Xiao; Junliang Zhang


Publisher
John Wiley and Sons
Year
2009
Weight
39 KB
Volume
40
Category
Article
ISSN
0931-7597

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## Abstract Phase‐transfer‐catalyzed nucleophilic addition—cyclization of electron‐deficient 1,3‐conjugated enynes towards 1,3‐dicarbonyl compounds provides access to a wide range of 4H‐pyrans such as (III) and (V).