Tert-butyl(4-chloro-2-ethynylphenoxy)acetate → Tert-butyl{4-chloro-2-[(1,1-dioxido-2,3-dihydro-1-benzothien-6-yl)ethynyl]phenoxy}acetate

Participants

Reaction Steps

Following the general method as outlined in Intermediate 20, starting from (4-chloro-2-ethynyl-phenoxy)-acetic acid tert-butyl ester (Intermediate 3) and 6-iodo-2,3-dihydro-1-benzothiophene 1,1-dioxide (Intermediate 234), the title compound was obtained as a beige solid after purification by flash column chromatography (silica), eluting with cyclohexane containing increasing amounts of EtOAc.

Provenance & Evidence