Δ3-Dihydropyrans and tetrahydropyrans by
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Teodor-Silviu Balaban; Alexandru T Balaban
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Article
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1987
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Elsevier Science
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French
⚖ 291 KB
The major reduction products with triaeetoxyborohydride INaBH, in A&H) of 2,4,6--trisubstituted pyryZiwn salts bearing alkyd substituents in the 2-and/or 6-position are the L3-dihydropyrcvas with cis Z-and 6-substituents and the aZZ-cis-2,4,&trisubstituted -tetrahydropyrcms. A3-Dihydropyrms are sham