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Synthesis of aryl sulfones and diaryl sulfones

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Synthesis of sulfones


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An efficient and transition-metal-free synthesis of diaryl sulfones in high yields from arylsulfinic acid salts and diaryliodonium salts tolerates a range of functional groups and offers high chemoselectivity if unsymmetrical diaryliodonium salts are used.
N. Umierski, G. Manolikakes, Org. Lett., 2013, 15, 188-191.


A metal-free and eco-friendly coupling of readily available diaryliodonium salts and arenesulfinates in PEG-400 under microwave irradiation enables the preparation of various diaryl sulfones in high yields and short reaction times under mild conditions. Furthermore, the coupling of diaryliodonium with arenesulfinate salts with and without copper iodide provides a convenient access to various diaryl sulfones with high selectivity.
D. Kumar, V. Arun, M. Pilania, K. P. Chandra Shekar, Synlett, 2013, 24, 831-836.


A fluoride triggered elimination strategy with alkyl 2-(trimethylsilyl)ethyl sulfoxides enables a unique palladium-catalyzed arylation of alkyl sulfenate anions to provide aryl alkyl sulfoxides in high yields. Due to the base sensitivity of the starting sulfoxides, intermediates, and products, the use of a mild method to generate alkyl sulfenate anions was crucial to the success of this process.
T. Jia, M. Zhang, H. Jiang, C. Y. Wang, P. J. Walsh, J. Am. Chem. Soc., 2015, 137, 13887-13893.


In an efficient transition-metal-free synthesis of sulfones, a broad range of alkyl/aryl/heteroaryl sodium sulfinates react with varyingly substituted o-silyl aryl triflates as aryne precursors under mild reaction conditions to afford structurally diverse sulfones in good to excellent yields.
V. G. Pandya, S. B. Mhaske, Org. Lett., 2014, 16, 3836-3839.


A simple, mild and efficient method for the synthesis of unsymmetrical diaryl sulfones using the palladium-catalyzed coupling of aryl boronic acids and arylsulfonyl chlorides has been developed.
B. P. Bandgar, S. V. Bettigeri, J. Phopase, Org. Lett., 2004, 6, 2105-2108.


A mild and efficient copper-catalyzed cross-coupling reaction of arylboronic acids with sulfinic acid salts affords a wide range of alkylaryl and diaryl sulfones in good yields under ambient conditions. The use of an ionic liquid allows a convenient separation of the product and recycling of copper catalyst.
M. L. Kantam, B. Neelima, B. Sreedhar, R. Chakravarti, Synlett, 2008, 1455-1458.


A mild and efficient synthesis of diaryl sulfones from arylboronic acids and arylsulfonyl hydrazides is described. Promoted by cupric acetate and in the absence of additional ligand and base, the cross-coupling reaction could afford a series of unsymmetrical diaryl sulfones in moderate to good yields at room temperature under neutral and ambient conditions.
X.-m. Wu, Y. Wang, Synlett, 2014, 25, 1163-1167.


A palladium-catalyzed arylation of aryl sulfenate anions generated from aryl 2-(trimethylsilyl)ethyl sulfoxides and CsF enables the synthesis of diaryl sulfoxides and heteroaryl aryl sulfoxides under mild conditions employing aryl bromides. Various functional groups are well tolerated.
T. Jia, M. Zhang, H. Jiang, C. Y. Wang, P. J. Walsh, J. Am. Chem. Soc., 2015, 137, 13887-13893.


The palladium-catalyzed reaction of sulfinic acid salts with a wide variety of aryl and vinyl halides or triflates, which is strongly influenced by the presence of nBu4NCl, provides unsymmetrical diaryl sulfones and aryl vinyl sulfones in good yields. The use of Xantphos, a rigid bidentate ligand with a wide natural bite angle, was found to be crucial for the success of the reaction.
S. Cacchi, G. Fabrizi, A. Goggiamani, L. M. Parisi, R. Bernini, J. Org. Chem., 2004, 69, 5608-5614.


The addition of Grignard reagents or organolithium reagents to the SO2-surrogate DABSO generates a diverse set of metal sulfinates, which can be trapped in situ with a wide range of C-electrophiles, including alkyl, allyl, and benzyl halides, epoxides, and (hetero)aryliodoniums to give sulfone products.
A. S. Deeming, C. J. Russell, A. J. Henessy, M. C. Willis, Org. Lett., 2014, 16, 150-153.


An easily accessible, anion-functionalized ionic liquid, 1-ethyl-3-methylimidazolium (S)-2-amino-3-methylbutyric acid salt, [emim][Val], is an efficient additive for the CuI-catalyzed coupling reaction of sulfinic acid salts with aryl iodides, aryl bromides and vinyl bromides, leading to sulfones in good yields.
M. Bian, F. Xu, C. Ma, Synthesis, 2007, 2951-2956.