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Photocycloaddition reactions of tricyclo[3.3.1.02,8]nona-3,6-dien-9-one (barbaralone) and carbonyl compounds

✍ Scribed by Tsutomu Miyashi; Akinori Konno; Yasutake Takahashi; Atsuko Kaneko; Takanori Suzuki; Toshio Mukai; Noboru Koga; Hiizu Iwamura

Publisher
Elsevier Science
Year
1989
Tongue
French
Weight
279 KB
Volume
30
Category
Article
ISSN
0040-4039

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πŸ“œ SIMILAR VOLUMES

The degenerate cope rearrangement of tri
The degenerate cope rearrangement of tricyclo[3.3.1.04,6] nona-2,7-diene-9-one
✍ Joseph B. Lambert πŸ“‚ Article πŸ“… 1963 πŸ› Elsevier Science 🌐 French βš– 248 KB

The discovery' that bicycle [ 5.1.01 o&a-2, S-diene (3,4-hometropilidene, I) undergoes a rapidly reverisible, degenerate Cope roarrangement has stimulated considerable theoretical interest. The generality of such behavior hae recently been put to test by the Syntheal11 of trtcyclo [ 3.3.2. 04' 6] de

The photochemistry of anti-tricyclo[5.2.
The photochemistry of anti-tricyclo[5.2.0.02,5]nona-3,8-dien-9-one. Formation of tetracylo[6.1.0.2,9.0 4,7]-5-en-3-one.
✍ Kazuyuki Yano πŸ“‚ Article πŸ“… 1974 πŸ› Elsevier Science 🌐 French βš– 101 KB

Recently, Cargill and coworkers1 have reported that irradiation of antitricyclo[5.2.0.0 285]nona-3,8-dien-9-one(I)l'2 in methylenechloride with "black-CI, lights" gives homocubane as a major product. However, it may be expected that

Intramolecular cyclopropanation of 7-dia
Intramolecular cyclopropanation of 7-diazotethered-1,3,5-cycloheptatriene: Preparation and reactions of tricyclo[5.3.0.02,10]deca-3,5-dien-9-one
✍ Henry H. Gu; Keith F. McDaniel; Mark C. McMills; Glenn P.A. Yap; Arnold L. Rhein πŸ“‚ Article πŸ“… 1997 πŸ› Elsevier Science 🌐 French βš– 218 KB

The rhodium(II)-catalyzed diazo decomposition of 7-diazocarbonyltethered-l,3,5-cycloheptatriene 3 generated tricyclic ketoester 4 in 64% yield. Reaction of ketoester 4 with nucleophiles leads to cyclopropane cleavage (Nu --PhSNa) to give 5 or rearrangement (Nu = RNH2) to give 7 or 8.

Intramolecular [2 + 2]-Photocycloadditio
Intramolecular [2 + 2]-Photocycloadditions of 6-Allyl-2-cyclohexenones. Formation of Tricyclo[3.3.1.02,7]nonan-6-ones and Tricyclo[4.2.1.03,8]nonan-7-ones
✍ Wolfgang FrΓΆstl; Paul Margaretha πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 German βš– 304 KB

## Abstract Alkylation of 4,4,6‐trimethyl‐2‐cyclohexenone (**1**) in toluene in the presence of sodium bis(trimethylsilyl)amide proceeds smoothly to give high yields of compounds **2**. Irradiation (Ξ»= 366 nm) of the 6‐allyl‐4,4,6‐trimethyl‐2‐cyclohexenones **2a–c** yields mixtures of the isomeric