The ring opening of alkylidenecyclopropanone acetal under acidic conditions produces the 1-alkylidene-2-oxyallyl cation as an intermediate, which reacts with furan to give the [3+2] and [4+3] cycloadducts as well as an electrophilic substitution p...
The ring opening of alkylidenecyclopropanone acetal under acidic conditions produces the 1-alkylidene-2-oxyallyl cation as an intermediate, which reacts with furan to give the [3+2] and [4+3] cycloadducts as well as an electrophilic substitution p...
M Fujita   S Hanagiri   T Okuyama   
TETRAHEDRON LETTERS 47(25) 4145-4148 2006年6月
Ring opening reactions of 2-cyclohexylidene-3,3-dimethylcyclopropanone acetal (1) are readily induced by treatment of hydrogen chloride in various solvents. Bond cleavage takes place at the C1-C2 or C2-C3 bond, and the ratio of C1-C2/C2-C3 cleavag...
M Fujita   S Hanagiri   T Okuyama   
TETRAHEDRON LETTERS 47(25) 4145-4148 2006年6月
Ring opening reactions of 2-cyclohexylidene-3,3-dimethylcyclopropanone acetal (1) are readily induced by treatment of hydrogen chloride in various solvents. Bond cleavage takes place at the C1-C2 or C2-C3 bond, and the ratio of C1-C2/C2-C3 cleavag...