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Halogen—Kohlenstoff—Schwefel‐Verbindungen: Synthesen mit 2‐Methylthio‐4,5‐bis(trifluormethyl)‐1,3‐dithiolium‐trifluormethansulfonat
Author(s) -
Mono Susanne,
Pritzkow Hans,
Sundermeyer Wolfgang
Publication year - 1993
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19931260922
Subject(s) - chemistry , phosphorane , medicinal chemistry , trifluoromethanesulfonate , electrophile , halogen , nucleophile , methylene , phosphonium , ylide , organic chemistry , catalysis , alkyl
Halogen—Carbon—Sulfur Compounds: Syntheses with 2‐Methylthio‐4,5‐bis(trifluoromethyl)‐1,3‐dithiolium Trifluoromethanesulfonate By reactions of the strongly electrophilic 2‐methylthio‐4,5‐bis‐(trifluoromethyl)‐1,3‐dithiol‐2‐ylium trifluoromethanesulfonate ( 6 ) with nucleophiles like secondary amines, phenoles and active methylene compounds the new 2‐amino‐1,3‐dithiolium salts 11 a—e and 1,3‐dithiol‐2‐ylidene compounds 5–10, 12 were obtained. The 1,3‐dithiolium salts 14 were prepared in two different ways. Reaction with PPh 3 yields the phosphonium salt 16 , from which the ethylidene compound 20 was obtained via the intermediate phosphorane 18 . The crystal structures of 7, 16 and of the fulvalene 19 were determined.