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. 2021 Dec 1;122(1):565–788. doi: 10.1021/acs.chemrev.1c00449

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© 2021 The Authors. Published by American Chemical Society

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Scheme 382 — Reagents and conditions: (a)⁷⁴⁹ COCl₂, toluene, 0 °C (10 min), then pyridine, toluene, N₂, reflux (15 min); (b)⁷⁵¹ (NH₄)₂CO₃ (excess), CHCl₂, pyridine, 110 °C, 3 h; (c)⁷⁵⁰ Rh₂(CO)₄Cl₂, LiHMDS, benzene, reflux; (d)⁷⁵⁰382.3a, PPh₃, benzene.