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Investigation of the basicity of certainβ, β-dichlorovinyl ethers and esters according to the IR spectra

✍ Scribed by N. I. Shergina; A. N. Mirskova; E. F. Zorina; S. G. Shevchenko; A. S. Atavin


Book ID
112421312
Publisher
Springer
Year
1972
Tongue
English
Weight
277 KB
Volume
21
Category
Article
ISSN
1573-9171

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## Abstract Chelate‐controlled Mukaiyama reaction of silyl enol ethers 2a, 2b, 2c, and 2d with β‐formylcarboxylate 1 in the presence of TiCl~4~ provided γ‐lactones 3a, 3b, 3c, and 3d in very good yields and with good to excellent __trans__ selectivities. The use of BF~3~, SnCl~4~, and SnBr~4~ as Le