Mechanistic Studies of the Palladium-Catalyzed Desulfinative Cross-Coupling of Aryl Bromides and (Hetero)Aryl Sulfinate Salts
作者:Antoine de Gombert、Alasdair I. McKay、Christopher J. Davis、Katherine M. Wheelhouse、Michael C. Willis
DOI:10.1021/jacs.9b13260
日期:2020.2.19
Pyridine and related heterocyclic sulfinates have recently emerged as effective nucleophilic coupling partners in palladium-catalyzedcross-coupling reactions with (hetero)aryl halides. These sulfinate reagents are straightforward to prepare, stable to storage and coupling reaction conditions, and deliver efficient reactions, thus offering many advantages, compared to the corresponding boron-derived
Pyridine sulfinates as general nucleophilic coupling partners in palladium-catalyzed cross-coupling reactions with aryl halides
作者:Tim Markovic、Benjamin N. Rocke、David C. Blakemore、Vincent Mascitti、Michael C. Willis
DOI:10.1039/c7sc00675f
日期:——
Pyridine rings are ubiquitous in drug molecules; however, the pre-eminent reaction used to form carbon–carbon bonds in the pharmaceutical industry, the Suzuki–Miyaura cross-couplingreaction, often fails when applied to these structures. This phenomenon is most pronounced in 2-substituted pyridines, and results from the difficulty in preparing, the poor stability of, and low efficiency in reactions
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 Remote Enantioselective Sulfonylation of Yne‐Allylic Esters with Sodium Sulfinates
作者:Meng‐Die Li、Zi‐Han Wang、Hui Zhu、Xin‐Ru Wang、Jia‐Run Wang、Tao‐Yan Lin
DOI:10.1002/anie.202313911
日期:2023.12.21
An enantioselective copper-catalyzed reaction was developed for the sulfonylation of yne-allylic esters with sodiumsulfinates. Salient features of this practical method include readily available starting materials, mild reaction conditions, excellent regio-, enantio- and diastereoselectivity, as well as broad substrate scope.
thioethers was disclosed, driven by PIII/PV═O redox cycling. In this work, one-step dehydroxylative thioetherification of alcohols was fulfilled with various hypervalent organosulfur compounds. This established strategy features an excellent functional group tolerance and broad substrate scope, especially inactivated alcohols. The scale-up reaction and further transformation of the product were also successful
公开了一种由 P III /P V = O 氧化还原循环驱动的无金属和无硫醇的有机磷催化形成硫醚的方法。在这项工作中,利用各种高价有机硫化合物实现了醇的一步脱羟基硫醚化。这种既定策略具有出色的官能团耐受性和广泛的底物范围,尤其是灭活醇。产品的放大反应和进一步转化也取得了成功。此外,该方法提供了一种无保护基且步骤有效的合成过氧化物酶体增殖物激活受体激动剂的方法,该方法在治疗哺乳动物骨质疏松症方面表现出良好的潜力。