Supplier Page from Thermo Fisher Scientific for 3-[2-(Trimethylsilyl)ethynyl]benzeneboronic acid pinacol ester, 97%
1-Fluoro-2-nitrobenzene, 99% from Thermo Fisher Scientific
Ethoxymethylenemalononitrile, 98% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific