(PENTAFLUOROPHENYL)THIOCARBONYL COMPOUNDS , SYNTHESIS AND STRUCTURE OF PENTAFLUOROPHENYL PHENYL SULFINE

The C6F5-substituted thiocarbonyls C6F5-CS-R [R = C6H5 (2), CH3 (4)] a re synthesized from the corresponding carbonyl compounds by using in s itu formed B2S3. The corresponding highly reactive thioaldehyde (R = H ) is trapped with anthracene as Diels-Alder adduct 7. By oxidation of 2 sulfine 10 is generated which dimerizes in the crystal lattice. An X -ray crystal structure determination of a trithiaphosphinane 9 was car ried out for the first time. The bis-para-substituted compound 12 is o btained from perfluorobenzophenone and hydrazine hydrate in a fast rea ction.