Anti-Friedel-Crafts-Type Substitution To Form Biaryl Linkages
摘要:
The ipso-substitution of one (or two) hydroxy groups of phloroglucinol with arene nucleophiles (e.g., o-xylene, tetralin, biphenyl) can be achieved easily under Friedel-Crafts-type conditions with or without the use of organic solvents affording a variety of 3,5-dihydroxybiphenyls (57-89% yields). The new method has significant practical advantages compared to classical biaryl-coupling routes.
The ipso-substitution of one (or two) hydroxy groups of phloroglucinol with arene nucleophiles (e.g., o-xylene, tetralin, biphenyl) can be achieved easily under Friedel-Crafts-type conditions with or without the use of organic solvents affording a variety of 3,5-dihydroxybiphenyls (57-89% yields). The new method has significant practical advantages compared to classical biaryl-coupling routes.