Supplier Page from Thermo Fisher Scientific for (3-Bromopropoxy)-tert-butyldimethylsilane, 97%, stabilized over sodium carbonate
2-Fluorobenzaldehyde, 97% from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl phenylpropiolate, 98% from Thermo Fisher Scientific