Ring-opening reactions of cyclopropanes. Part 8.1 Nitrosation of donor-acceptor cyclopropanes
The reaction of 2,2-dialkoxycyclopropane-1-carboxylates 1a-d and monoalkoxycyclopropane 1e with NOCl gives isoxazoline- and/or isoxazole-3-carboxylates by regioselective ring-opening at C1-C2 bond. A mechanistic interpretation suggests the intermediacy of well-stabilised dipolar species.
Cermola, Flavio,Di Gioia, Lucrezia,Graziano, Maria Liliana,Iesce, Maria Rosaria
p. 677 - 681
(2007/10/03)
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