What starting materials could be used to synthesize each of the following compounds by a Sonogashira coupling

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What starting materials could be used to synthesize each of the following compounds by a Sonogashira coupling reaction?

(a)

(b)

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Organic Chemistry

ISBN: 978-1118875766

12th Edition

Authors: T. W. Graham Solomons, Craig B. Fryhle, Scott A. Snyder

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