((CH3)3CO-K+), methacryloyl chloride, 2,2'-Azobisisobutyronitrile (AIBN) as initiator, 1-vinylimidazole (VIM), methacrylamide (MAm) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) as commercial monomer were purchased from Sigma-Aldrich.
Cyclopentanone, methyl iodide, potassium tert-butoxide
, 4,4'-bipyridyl (Aldrich), carbon disulfide, and nickel(ii) chloride (J.
To 0.63 g (5.614 mmol) of potassium tert-butoxide
in 10 mL tert-butyl alcohol was added the 1.05 g of crude in 10 mL tert-butyl alcohol drop wise over 15 min and refluxed for 2 hours, when the aliquot indicated a single peak in gas chromatogram.
The synthesis of spirobifluorenyl-substituted PPV  by the dehydrohalogenation of 1,4-bis(bromomethyl)-2-(2'-ethylhexyloxy)-5-(2"-((2"',7"'-di-tert-butyl)-9",9"'-spirobifluorenyl)) benzene using large excess of potassium tert-butoxide
is one example of the Gilch procedure.
(193 mg or 1.72 mmol) was added to 0.1 M solution of 6-methyl-7-tert-butyldimethylsilyloxybicyclo[4.4.0]dec-1-en-3-one (1) (52 mg or 0.176 mmol) in dry tert-butanol and stirred at room temperature under argon atmosphere for 2 h.
A mixture of 4-nitrobenzyltriphenylphosphonium bromide (Aldrich USA, 5.5 mmol, 2.62 g), dry tetrahydrofuran (BDH England, 100 ml) and potassium tert-butoxide
(Aldrich USA, 6.56 mmol, 0.735g) was stirred together under nitrogen atmosphere at room temperature in a round bottom flask for 30 minutes.