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Enhancement of optical purity of a product by removing unwanted diastereomers in the course of a chiral synthesis: new synthesis of the stereoisomers of 2,8-dimethyl-1,7-dioxaspiro[5.5]undecane, the pheromone of andrena wilkella

✍ Scribed by Kenji Mori; Hidenori Watanabe

Book ID
108371751
Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
890 KB
Volume
42
Category
Article
ISSN
0040-4020

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πŸ“œ SIMILAR VOLUMES

Nitro Ketones in Organic Synthesis: A Ne
Nitro Ketones in Organic Synthesis: A New, Short Synthesis of Racemictrans-2-methyl-1,7-dioxaspiro[5.5]undecane,trans, trans- andtrans,cis-2,8-dimethyl-1,7-dioxaspiro[5.5]undecane by Henry reaction
✍ Ballini, Roberto ;Bosica, Giovanna ;Schaafstra, Robert πŸ“‚ Article πŸ“… 1994 πŸ› John Wiley and Sons 🌐 English βš– 235 KB

## Abstract The synthesis of spiroketals from nitro ketones is described. Racemic __trans__‐2‐Methyl‐1,7‐dioxaspiro[5.5]undecane (1a), and 2,8‐dimethyl‐1,7‐dioxaspiro[5.5]undecane (1b) are synthesized as a mixture of __trans__, __trans__ and __trans__, __cis__ isomers in a ratio of 6.5:3.5 (separab