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Syn-anti selectivity of cis-3,4-disubstituted cyclobutenes : Part 4: Oxygen-substituted Cyclobutenes. Experimental Frontier Orbital Energies.

โœ Scribed by Harald Hake; Harald Landen; Hans-Dieter Martin; Bernhard Mayer; Alois Steigel; Guiseppe Distefano; Alberto Modelli

Publisher
Elsevier Science
Year
1988
Tongue
French
Weight
237 KB
Volume
29
Category
Article
ISSN
0040-4039

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Syn-anti selectivity of cis-3,4-disubsti
Syn-anti selectivity of cis-3,4-disubstituted cyclobutenes : Part 3: Chloro-thio- and Dithio-substituted Cyclobutenes
โœ Harald Landen; Birgit Margraf; Hans-Dieter Martin; Alois Steigel ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 196 KB

Cycloadditions of the 3.4-substituted cyclobutenes k, W\_ with diaxoalkanes RR'CNz, R = ii und R' = Ii, alkyl, aryl or alkoxycarbonyl exclusively yield w-adducts. Diphenyll nitrilimine and mesitonitrile oxide mainly undergo &-addition.