Synthesen von Tricyclo [5.2.1.04,8]decan (2-Homobrendan)
✍ Scribed by Franz Josef Jäggi; Peter Buchs; Camille Ganter
- Book ID
- 102858480
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- German
- Weight
- 936 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Syntheses of Tricyclo [5.2.1.0^4,8^]decane (2‐Homobrendane)
Three different approaches to tricyclo [5.2.1.0^4,8^] decane (5) (and derivatives thereof), one of the 19 isomeric hydrocarbons of the ‘adamantaneland’, are described: (1) Cyclization of properly functionalized bicyclo [3.2.1]octanes as 32(cyclialkylation), 40+42 (thermocyclization) and 44+45 (photocyclization); (2) Silver‐(I)‐ion catalyzed rearrangement of 5,7‐ and 5,10‐Dehydroprotoadamantane (63 and 64, respectively) yielding tricyclo[5.2.1.0^4,8^]dec‐2‐ (39) and ‐5‐ene (59), respectively; (3) Thermal eliminative rearrangement of the 10__endo‐p__‐toluenesulfonate and ‐methanesulfonate of protoadamantane (71 and 72) and protoadamant‐4‐ene (76 and 77), respectively, yielding tricyclo [5.2.1.0^4,8^]dec‐2‐ene (39) and ‐2, 5‐diene (15), respectively.
📜 SIMILAR VOLUMES
Regioselective generation of the C(2)-carbocation a of tricyc10[4.2.2.0',~]decane (1) by treatment of both corresponding epimeric alcohols 5 and 6 with BF, and trapping the rearranged tricy~lo[S.3.0.O~~~]decan-7-yl carhocation b with Et,SiH as hydride-ion donor (ionic hydrogenation) gives the corres
Tricyclo(5.2.1.04~10)dacane-2,S,8-trions (4) has bssn aynthasized from the cortssponding bis-acetal of the unsaturated diketons 20 by a hydroborationloxihationfdaprotsction saquence.