Base‐Activated Latent Heteroaromatic Sulfinates as Nucleophilic Coupling Partners in Palladium‐Catalyzed Cross‐Coupling Reactions
作者:Xinlan A. F. Cook、Loïc R. E. Pantaine、David C. Blakemore、Ian B. Moses、Neal W. Sach、Andre Shavnya、Michael C. Willis
DOI:10.1002/anie.202109146
日期:2021.10.4
effective nucleophilic reagents in Pd0-catalyzed cross-coupling reactions with aryl halides. However, metal sulfinate salts can be challenging to purify, solubilize in reaction media, and are not tolerant to multi-step transformations. Here we introduce base-activated, latent sulfinate reagents: β-nitrile and β-ester sulfones. We show that under the cross-couplingconditions, these species generate
Copper-Catalyzed Synthesis of Masked (Hetero)Aryl Sulfinates
作者:May R. Merino、Xinlan A. F. Cook、David C. Blakemore、Ian B. Moses、Neal W. Sach、Andre Shavnya、Michael C. Willis
DOI:10.1021/acs.orglett.3c03621
日期:2024.4.12
Catalysis using substoichiometric copper facilitates the synthesis of masked (hetero)aryl sulfinates under mild, base-free conditions from aryl iodides and the commercial sulfonylation reagent sodium 1-methyl 3-sulfinopropanoate (SMOPS). The development of a tert-butyl ester variant of the SMOPS reagent allowed the use of aryl bromide substrates. The sulfones thus generated can be unmasked and functionalized