Reference

Gas-phase electron attachment reactions and negative-ion mass spectra of substituted pentafluorophenyl compounds

Gas-phase electron attachment reactions and negative-ion mass spectra of substituted pentafluorophenyl compounds. Gregor, Ian K.; Guilhaus, Michael (Sch. Chem., Univ. New South Wales, Kensington NSW, 2033, Australia). J. Fluorine Chem., 23(6), 549-56 (English) 1983. CODEN: JFLCAR. ISSN: 0022-1139. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) C6F5R (I; R = F, Me, NH2, OH, SH, OMe, COMe, CHO, NO2, cyano) undergo low-energy, gas-phase, electron-attachment reactions under neg. chem.-ionization conditions which can result in the prodn. of intense neg.-ion beams. Long-lived mol. neg. ions are formed when R is highly electron withdrawing, and this correlates in certain cases (I; R = F, cyano, CHO) with reported [M]·- autodetachment times. I (R = COMe, CHO, cyano), which exhibit minimal fragmentation of [M]·-, are useful neg. 771-61-9 and 771-60-8 are just another two chemicals used in this study.-ion mass calibrants. .

Diazotization of pentafluoroaniline by means of anion-catalyzed phase transfer catalysis in a hydrophobic organic solvent

Diazotization of pentafluoroaniline by means of anion-catalyzed phase transfer catalysis in a hydrophobic organic solvent. Iwamoto, Hidetoshi; Sonoda, Takaaki; Kobayashi, Hiroshi (Grad. Sch. 771-60-8 are also occured in this study. Eng. Sci., Kyushu Univ., Fukuoka 816, Japan). J. Fluorine Chem., 24(4), 535-7 (English) 1984. CODEN: JFLCAR. ISSN: 0022-1139. DOCUMENT TYPE: Journal CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) C6F5NH2 was diazotized in an aq. H2SO4-CH2Cl2 system using Na[B{C6H3(CF3)2-3,5}4] as a phase transfer catalyst, in the presence of ROH (R = C6H4OMe-4, 1-methoxynaphth-4-yl, C6H2Me3-2,4,6] to give C6F5N:NR in 44-80% yield. Replacing ROH with KBr and Cu salts gave 19.30% C6F5R1 (R1 = Br, H) resp., and using C6H6 and Cu salts instead of ROH gave 60% C6F5Ph. .