Chiral Organometallic Reagents, IV Stereoselective Formation of β-Silyloxy-α-bromoalkyllithium Compounds
The diastereomeric carbenoids 4 have been generated by diastereoselective (84:16) exchange of the diastereotopic bromine atoms in the dibromo compound 3 for lithium at -120 deg C.The implication of the observed diastereoselectivity for the Nozaki ring-expansion method is discussedKey words: Carbenoids / Halogen-metal exchange / Diastereotopic groups
Hoffmann, Reinhard W.,Julius, Manfred
p. 811 - 822
(2007/10/02)
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