Kozhushkov, Sergeri I.; Haumann, Thomas; Boese, Roland; de Meijere, Armin:
Perspirocyclopropanated [3]rotanes: cut-out from a carbon network with spirocyclopropane units?
1993
In: Angewandte Chemie, Jg. 105 (1993), Heft 3, S. 426 - 429
Artikel/Aufsatz in Zeitschrift1993Chemie
Titel:
Perspirocyclopropanated [3]rotanes: cut-out from a carbon network with spirocyclopropane units?
Autor(in):
Kozhushkov, Sergeri I.; Haumann, Thomas; Boese, RolandLSF; de Meijere, Armin
Erscheinungsjahr
1993
Erschienen in:
Titel:
Angewandte Chemie
in:
Jg. 105 (1993), Heft 3, S. 426 - 429
ISSN:

Abstract:

Perspirocyclopropanated [3]rotane I was prepd. from sequential cyclopropanation reactions beginning with bis(dispiroheptylidene) II. II underwent cyclopropanation with Et diazoacetate in the presence of [Rh2(OAc)2]2 catalyst to give III (X = CO2Et). By a 4 step synthesis III (X = CO2Et) is converted to III [X = N(NO)CONH2] which upon treatment of with NaOMe and bicyclopropylidene gave I in 14% yield.