112013-79-3Relevant academic research and scientific papers
Nitroepoxide ring opening with thionucleophiles in water: Synthesis of α-xanthyl ketones, β-keto sulfones and β-keto sulfonic acids
Badali, Elham,Habibi, Azizollah,Rahimzadeh, Hossein,Sharifi, Ali,Ziyaei Halimehjani, Azim
supporting information, p. 4983 - 4987 (2020/07/30)
Nitroepoxide ring opening with thionucleophiles such as potassium xanthates, sodium aryl sulfinates and sodium bisulfite in water is investigated. It provides a direct and green route for the synthesis of α-xanthyl-α-aryl-2-propanones (P2P-xanthate derivatives), β-keto sulfones and β-keto sulfonic acids. High to excellent yields, performing the reaction in water under catalyst-free conditions, and easy work-up are the main advantages of this protocol.
A DEVELOPING AGENT PRECURSOR FOR LASER MARKABLE COMPOSITIONS
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Paragraph 0150-0151, (2019/01/07)
The invention relates to novel laser markable compositions comprising developing agent precursors according to formula (I).
Efficient Diastereoselective Syntheses of erythro- Or threo-a-Alkyl-β-hydroxy Sulfones by Reductions of α-Alkyl-β-keto Sulfones with TiCI4/BHg or LiEtsBH/CeCl3, Respectively
Marcantoni, Enrico,Cingolani, Simone,Bartoli, Giuseppe,Bosco, Marcella,Sambri, Letizia
, p. 3624 - 3630 (2007/10/03)
A stereoselective synthesis of erythro- and threo-α-alkyl-β-hydroxy sulfones by reduction of the corresponding α-alkyl-β-keto sulfones has been developed. The pivotal role in this methodology is played by the chelating or nonchelating properties of the Lewis acid employed. The strong chelating TiCl4 led to the erythro isomer in high diastereomeric excess in noncoordinating solvents (CH2Cl2) at -78 °C using BH3/py as reducing agent, while the nonchelating CeCl3 gave a high excess of the threo isomer in coordinating solvents (THF) at the same temperature using lithium triethylborohydride (LiEt3BH) as reducing agent. Moreover, this methodology has been successfully utilized for the synthesis of α-allyl-β-hydroxy sulfones, which are useful synthetic intermediates to obtain 2,5-disubstituted tetrahydrofurans by electrophilic cyclization.
Lithio Styryl Sulfone as an Acyl Anion Synthon
Yamamoto, Makoto,Suzuki, Kazuya,Tanaka, Seiji,Yamada, Kazutoshi
, p. 1523 - 1524 (2007/10/02)
Lithio styryl sulfone, which was shown to be an acyl anion synthon, reacted with various electrophiles; the products were rearranged by treatments with m-chloroperbenzoic acid to give acyl benzyl sulfones in good yields.
