title: gem-Difluorination of 2,2-diaryl-1,3-dithiolanes by Selectfluor and pyridinium polyhydrogen fluoride.
abstract: 2,2-diaryl-1,3-dithiolanes, readily obtainable from diaryl ketones, were transformed into the corresponding gem-difluoro compounds using a novel reagent combination involving Selectfluor and pyridinium polyhydrogen fluoride (PPHF) under mild conditions in moderate to good yields.
authors.affiliation: Department of Chemistry, University of Missouri-Rolla, Rolla, MO 65409-00010, USA. preddy@umr.edu
authors.forename: V Prakash
authors.initials: VP
authors.lastname: Reddy
authors.forename: Ramesh
authors.initials: R
authors.lastname: Alleti
authors.forename: Meher K
authors.initials: MK
authors.lastname: Perambuduru
authors.forename: Urs
authors.initials: U
authors.lastname: Welz-Biermann
authors.forename: Herwig
authors.initials: H
authors.lastname: Buchholz
authors.forename: G K Surya
authors.initials: GK
authors.lastname: Prakash
mesh_terms: D003979:Diazonium Compounds / Q000737:chemistry*; D005461:Fluorine / Q000737:chemistry*; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D015394:Molecular Structure; D011726:Pyridinium Compounds / Q000737:chemistry*
chemical_list: D003979:Diazonium Compounds; D006571:Heterocyclic Compounds; D011726:Pyridinium Compounds; D005461:Fluorine; C012948:1,3-dithiolane; C408750:selectfluor