**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‐
✦ LIBER ✦
Synthese und Bestimmung des Chiralitätssinns von (+)-(R)-1-Azabicylo[3.3.1]nonan-2-on
✍ Scribed by Renate Brehm; Dieter Ohnhäuser; Hans Gerlach
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- German
- Weight
- 467 KB
- Volume
- 70
- Category
- Article
- ISSN
- 0018-019X
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## Abstract A synthesis and the determination of the absolute configuration of (−)‐(__1S, 3R′ 6R, 8R__)‐2, 7‐dioxa‐isotwistane (**13**) and (−)‐(__1R, 3R, 6R, 8R__)‐2, 7‐dioxa‐twistane (**14**) is described. The results for **14** are compared with those for carboeyclic (+)‐twistane (**2**) of know