Supplier Page from Thermo Fisher Scientific for 3-Bromobenzylzinc bromide, 0.5M in THF, packaged under Argon in resealable ChemSealµt bottles
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific