Thermal rearrangement of alkoxycyclopropanes
Abstract
1,2-Dimethoxy-3-methylcyclopropanes (1)–(3) undergo geometrical isomerization with activation energies of ca. 210 kJ mol–1; comparison with 1-methoxy-2,3-dimethylcyclopropanes (4)–(6) indicates preferred single rotation about the C(1)–C(2) bond.