A NON-TYPICAL CYCLOBUTANE DIMER PHOTOPROD FROM 5-ETHYLOROTATE

Strained Ketenes from α-Bromoacyl Phosph

Strained Ketenes from α-Bromoacyl Phosphates. (Tricyclo[4.4.1.01,6]undeca-3,8-dien-11-ylidene)methanone and its Heptacyclic Dimer: a Dispirobridged Dipropellane (1,1″,4,4″,5,5″,8,8″-Octahydrodispiro[[4a, 8a]methanonaphthalene-9,1′-cyClobutane-3′,9″-[4a, 8a]methanonaphthalene]-2′, 4′-dione)

✍ H. Martin R. Hoffmann; Peter M. Geschwinder; Hans-Peter Hollwege; Angela Walenta 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 German ⚖ 454 KB

Dehalogenation of the mixed anhydride 6 of 11-bromotricyclo[4.4.1 .0',6]undeca-3,8-diene-l 1-carboxylic acid (4) and of diethyl hydrogen phosphate with Zn-Ag couple in THF gave the dispiro-fused dipropellane 8 ( I , l", 4,4,5,5", 8,8"-octahydrodispiro[[4a, 8a]methanonaphthalene-9,1 '-cyclobutane-3',