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An Expeditious Access to Enantiomerically Pure cis-Dialkyl-Substituted γ- and δ-Lactones

✍ Scribed by Yikang Wu; Xin Shen; Chao-Jun Tang; Zhi-Long Chen

Publisher
John Wiley and Sons
Year
2001
Tongue
German
Weight
66 KB
Volume
84
Category
Article
ISSN
0018-019X

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✍ Manfred Braun; Claudia Unger; Kersten Opdenbusch 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 263 KB 👁 2 views

Allyl carbonates (Z)-8 and (E)-9 are available from the converted into (S)-γ-butyrolactone 13 in a three step sequence. When the same protocol is applied to the isomeric addition of the chiral alkenyllithium reagent 5b to aromatic aldehydes 6. When sujected to a palladium-catalyzed diesters 10 and 1