Supplier Page from Thermo Fisher Scientific for 3-Isopropoxy-4-(tri-n-butylstannyl)-3-cyclobutene-1,2-dione, 97%
2-Fluoroaniline, 99+% from Thermo Fisher Scientific
Ethyl 4,4,4-trifluoroacetoacetate, 97% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific
Ethylbenzene, 99.8%, pure from Thermo Fisher Scientific