(a)
Interpretation:
The major organic product for the given reaction is to be drawn.
Concept introduction:
In Heck Coupling reaction R from RX can be vinylic or aryl group. The R’ from H-R’ can be a vinylic or aryl group. X can be Cl, Br or I. In essence, R from R-X replaces H from H-R’ If the R-X halide is vinylic, the configuration about the double bond is retained. If H-R’ is vinylic and has an attached substituent at the opposite end of the
(b)
Interpretation:
The major organic product for the given reaction is to be drawn.
Concept introduction:
In Heck Coupling reaction R from RX can be vinylic or aryl group. The R’ from H-R’ can be a vinylic or aryl group. X can be Cl, Br or I. In essence, R from R-X replaces H from H-R’ If the R-X halide is vinylic, the configuration about the double bond is retained. If H-R’ is vinylic and has an attached substituent at the opposite end of the
(c)
Interpretation:
The major organic product for the given reaction is to be drawn.
Concept introduction:
In the Suzuki coupling reaction, under basic condition, a vinylic or aryl halide is treated with an organoboron compound and a palladium catalyst. In this reaction, the four steps involved are oxidation addition, substitution, transmetallation, and reductive elimination. The Suzuki reaction is stereospecific. These reactions involving possible E/Z isomerism usually proceed with retention of configuration.
(d)
Interpretation:
The major organic product for the given reaction is to be drawn.
Concept introduction:
In the Suzuki coupling reaction, under basic condition, a vinylic or aryl halide is treated with an organoboron compound and a palladium catalyst. In this reaction, the four steps involved are oxidation addition, substitution, transmetallation, and reductive elimination. The Suzuki reaction is stereospecific. These reactions involving possible E/Z isomerism usually proceed with retention of configuration.
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