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Trifluoromethylation of Carbonyl Compounds with Trifluoromethyltrimethylsilane (Ruppert Reagent) Promoted by Triphenyldifluorostannates

Borkin D., Loska R., Mąkosza M.

Polish Journal of Chemistry

2005

Vol. 79 / nr 7

1187-1191

Nucleophilic trifluoromethylation of aromatic aldehydes and ketones with trifluoromethyltrimethylsilane is initiated with KF/n-Bu3MeN+HSO4 /Ph3SnF cocatalytic system in CH2Cl2 or with K[Ph3SnF2] in DMF.

Lower critical solution temperature of the copolymers of N-isopropylacrylamide and sodium 2-acrylamido-2-methyl-1-propanesulfonate

Szczubiałka K., Loska R., Nowakowska M.

Zeszyty Naukowe. Chemia / Politechnika Śląska

2001

z. 146

137-140

A series of random copolymers of N-isopropylacrylamide (NIPAM) and sodium 2-acrylamido-2-methyl-1-propanesulphonate (AMPS) has been synthesized by free radical copolymerization. The content of AMPS in the copolymers ranged from 1.1 to 9.6 mol%. The reactivity ratios for the AMPS and NIPAM monomer pair, determined using different methods, were 11.0-11.6 and 2.1-2.4, respectively. The dependence of the aggregative behavior of the polyelectrolytes on the polymer composition, concentration and ionic strength has been studied.