Помогите, пожалуйста, статьёй:
Winton D. Jones Jr., William L. Albrecht, Frank P. Palopoli
Fluorene derivatives: Friedel-Crafts reaction of 2-fluorenyl basic ethers
J. Org. Chem., 1977, 42 (25), pp 4144–4146
- DOI:
http://dx.doi.org/10.1021/jo00445a035