| abstract |
Compounds of the general formula (1) Pph 3 -CH-C (R) = Nu where the symbols R and Nu have the following meaning: R = hydrogen, a C 1 -C 5 alkyl or C 1 -C 5 fluoro or perfluoroalkyl radical, an optionally fluorinated C 6 -C 14 aryl radical or a group OCH 3 ; Nu = S, Se, C (CN) 2 , NH, PhN, PhNHN, CH 3 COCCOCH 3 , CH 3 OOCCCOOCH 3 or a radical of the formulas (a), (b), (c), (d) or (e ) with Z = C (CH 3 ) 2 , S or N (CH 3 ) and n = 1 or 2 the combinations R = Ph and Nu = NPh, CH 3 COCCOOC 2 H 5 and R = Ar, SAlk, OAlk and Nu = NPh and the combination R = H, Alk, Aryl and Nu = S are excluded. |