Synthesis of<i>syn</i>and<i>anti</i>1,4-Diols by Copper-Catalyzed Boration of Allylic Epoxides
作者:Mariola Tortosa
DOI:10.1002/anie.201100613
日期:2011.4.18
Two sides of the same coin: Syn and anti 1,4‐diols have been synthesized through the regio‐ and diastereoselective CuI‐catalyzed boration of allylicepoxides (see scheme; pin=pinacolato, TES=triethylsilyl). In situ protection of the alcohol allows isolation of syn and anti 1,4‐silyloxyboronates. Monoprotected 1,4‐diols can be prepared by a one‐pot addition–protection–oxidation sequence.
Catalytic behaviour of chloroperoxidase from Caldariomyces fumago in the oxidation of cyclic conjugated dienes
作者:Claudia Sanfilippo、Giovanni Nicolosi
DOI:10.1016/s0957-4166(02)00509-8
日期:2002.9
Chloroperoxidase fromCaldariomycesfumago has been investigated as a catalyst for the oxidation of cyclic conjugated dienes. The nature of the substituents and the size of the carbocycle affect the enantioselectivity of the enzyme. An unexpected course of the CPO-catalyzed oxidation has been observed in the reaction of cis,cis-1,3-cyclooctadiene.