An efficient preparation, crystal structures, and properties of monocarbenium-ion compounds stabilized by 3-guaiazulenyl and anisyl groups

An efficient preparation, crystal structures, and properties of the target monocarbenium-ion compounds 5a-7 stabilized by 3-guaiazulenyl and anisyl (i.e., 2-methoxyphenyl, 3-methoxyphenyl, or 4-methoxyphenyl) groups are reported.