title: Synthesis of o-chlorophenols via an unexpected nucleophilic chlorination of quinone monoketals mediated by N,N'-dimethylhydrazine dihydrochloride.
abstract: An unexpected nucleophilic chlorination of a quinone monoketal while carrying out a pyrazolidine synthesis has led to a general preparation of multisubstituted phenols. The products are obtained in good to high yields under mild conditions. The bridged pyrazolidines that were the original targets are obtained in the presence of a protic solvent.
authors.affiliation: Department of Chemistry, Hunter College, 695 Park Avenue, New York, NY 10065, USA.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Yin
authors.forename: Jinzhu
authors.initials: J
authors.lastname: Zhang
authors.forename: Jing
authors.initials: J
authors.lastname: Wu
authors.forename: Riana
authors.initials: R
authors.lastname: Green
authors.forename: Sihan
authors.initials: S
authors.lastname: Li
authors.forename: Shengping
authors.initials: S
authors.lastname: Zheng
mesh_terms: D019813:1,2-Dimethylhydrazine / Q000737:chemistry*; D002733:Chlorophenols / Q000138:chemical synthesis* / Q000737:chemistry; D054879:Halogenation; D009682:Magnetic Resonance Spectroscopy; D011720:Pyrazoles / Q000138:chemical synthesis / Q000737:chemistry; D011809:Quinones / Q000737:chemistry
chemical_list: D002733:Chlorophenols; D011720:Pyrazoles; D011809:Quinones; D019813:1,2-Dimethylhydrazine; C030683:2-chlorophenol