ChemInform Abstract: Unusual Regioselect
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K. SUZUKI; T. IMAI; S. YAMANOI; M. CHINO; T. MATSUMOTO
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Article
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2010
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John Wiley and Sons
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Unusual Regioselectivity in the Reductive Coupling of Alkynes and Allenes by Hydrozirconation and Zinca-Claisen Rearrangement. -The title reactions give the ฮฑ-adducts as the sole products [mechanism]. This process can be applied for a new vitamin E synthesis. The ฮฑ-product (IX) from the chiral alle