**Synthesis of __endo__‐ and __exo__‐1,3‐dimethyl‐2,9‐dioxabicyclo[3.3.1]nonane** The synthesis of a host‐specific substance in norway spruce infested by __Trypodendron lineatum__ OLIV. is described (__cf. scheme 1 and 2__). Alkylation of the acetyl‐acetone di‐anion (II) with 3‐methyl‐3‐buten‐1‐yl‐
Synthesis of endo-1,3-dimethyl-2,9-dioxa-bicyclo [3.3.1.] nonane
✍ Scribed by Peter Mohr; Christoph Tamm
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- French
- Weight
- 112 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
The title compound has been synthesized stereoselectively based on a new methodology for the construction of erythro-1,3-diols. Endo-1,3-dimethyl-2,9-dioxabicyclo[3.3.1]nonane (11, first isolated by Heemann and Francke in 1976 from Norway spruce attacked by the ambrosia beetle (Tgypodendron Lineatum Oliv.)', -__--__-^_______ was proved to exhibit an important role for causing host selection. Several groups have reported syntheses for 1. in racemic or optically active form2. In a preceding letter we have proposed a stereoselective method for the construction of erythro-1,3-diols based on the V5+ -catalyzed TBHP-epoxidation of (Z)-5-hydroxy-2-alkenylsilanes 3 . In this
📜 SIMILAR VOLUMES
La protection des fonctions hydroxy par 0-silylation ne permet pas d'obtenir la transformation ultirieure en (3R,5R)-5.
The title compound was synthesized using a novel approach to form a C3.2.11 oxabicyclic ring system. This was achieved through an intramolecular C-H insertion of a carbenoid intermediate. ## Endo -1,3-dimethyl-2,9-dioxabicycloC3.3.11 nonane 1. isolated from Norway spruce, was found to be a host s