Aluminum Triflate Catalyzed Tandem Reactions of d‑Galactal: Toward Chiral Benzopyrans, Chromenes, and Chromans
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下载链接：
https://figshare.com/articles/dataset/Aluminum_Triflate_Catalyzed_Tandem_Reactions_of_d_Galactal_Toward_Chiral_Benzopyrans_Chromenes_and_Chromans/2257888
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资源简介：
3,4,6-Tri-O-acetyl-d-galactal is selectively
converted into 1-O-aryl-2-deoxy derivatives or chiral
bridged benzopyrans under Al(OTf)3 catalysis, depending
on reaction conditions. The benzopyrans react with Al(OTf)3/acetic anhydride in ring-opening reactions in the absence or presence
of acetic acid to selectively produce chiral chromenes or chromans,
respectively, in high yields.
创建时间：
2014-09-05
