Cross coupling reactions of organozinc iodides with solid-supported electrophiles: synthesis of 4-substituted benzoic and 3-substituted (E)- and (Z)-propenoic acids and amides

Abstract

The solid-supported iodobenzoic acid derivatives 8–10 were coupled with a range of organozinc reagents 1–4 under palladium(0) catalysis. The coupled products released by acidic cleavage with TFA were obtained in high purities after recrystallisation. Analogous coupling of solid-supported (E)- and (Z)-3-iodoacrylic acids 18a, 18b, 19 and 20 gave (E)- and (Z)-α,β-unsaturated acids and amides 21–27 stereospecifically.