杂环亚磺酸盐是钯催化与芳基和杂芳基卤化物偶联反应的有效试剂,通常可提供高产率的目标联芳基。然而,复杂杂环亚磺酸盐的制备和纯化可能存在问题。此外,亚磺酸盐官能团不能耐受大多数合成转化,使这些试剂不适合多步加工。在这里,我们表明杂环烯丙基砜可以作为潜在的亚磺酸盐试剂,并且当用 Pd(0) 催化剂和芳基卤化物处理时,会发生脱烯丙基化,然后进行有效的脱亚磺酰交叉偶联。使用多种互补路线可以方便地制备范围广泛的烯丙基杂芳基砜,并且证明是与各种芳基和杂芳基卤化物的有效偶联伙伴。我们证明烯丙基砜官能团可以耐受一系列标准合成转化,包括正交 C 和 N 偶联反应,允许多步加工。烯丙基砜成功地与多种医学相关底物偶联,证明了它们在要求严格的交叉偶联转化中的适用性。此外,药物克唑替尼和依托考昔是使用烯丙基杂芳基砜偶联伙伴制备的,进一步证明了这些新试剂的实用性。证明它们在要求苛刻的交叉耦合转换中的适用性。此外,药物克
杂环亚磺酸盐是钯催化与芳基和杂芳基卤化物偶联反应的有效试剂,通常可提供高产率的目标联芳基。然而,复杂杂环亚磺酸盐的制备和纯化可能存在问题。此外,亚磺酸盐官能团不能耐受大多数合成转化,使这些试剂不适合多步加工。在这里,我们表明杂环烯丙基砜可以作为潜在的亚磺酸盐试剂,并且当用 Pd(0) 催化剂和芳基卤化物处理时,会发生脱烯丙基化,然后进行有效的脱亚磺酰交叉偶联。使用多种互补路线可以方便地制备范围广泛的烯丙基杂芳基砜,并且证明是与各种芳基和杂芳基卤化物的有效偶联伙伴。我们证明烯丙基砜官能团可以耐受一系列标准合成转化,包括正交 C 和 N 偶联反应,允许多步加工。烯丙基砜成功地与多种医学相关底物偶联,证明了它们在要求严格的交叉偶联转化中的适用性。此外,药物克唑替尼和依托考昔是使用烯丙基杂芳基砜偶联伙伴制备的,进一步证明了这些新试剂的实用性。证明它们在要求苛刻的交叉耦合转换中的适用性。此外,药物克
Synthesis of Aromatic Sulfones from SO<sub>2</sub>
and Organosilanes Under Metal-free Conditions
作者:Niklas von Wolff、Joëlle Char、Xavier Frogneux、Thibault Cantat
DOI:10.1002/anie.201702311
日期:2017.5.8
The conversion of SO2 into arylsulfones undermetal‐freeconditions was achieved for the first time by reacting SO2 with (hetero)arylsilanes and alkylhalides in the presence of a fluoride source. The mechanism of this transformation was elucidated based on DFT calculations, which highlight the influence of SO2 in promoting C−Si bond cleavage.
Process for the Synthesis of Sulfones and Sulfonamides
申请人:Commissariat a l'Energie Atomique et aux Energies Alternatives
公开号:US20170166542A1
公开(公告)日:2017-06-15
A one pot single step process is described for the synthesis of a compound, including a labeled compound, containing a sulfonyl functional group comprising the step of mixing together a silane, an SO
2
source, an electrophilic compound, an activating compound and optionally a metal catalyst. A process for producing tracers from a labeled sulfonyl containing compound prepared by the described process is also included.
A LewisbaseassistedBrønstedbasecatalysis (LBABB) strategy is applied for directasymmetric vinylogous alkylation of allylic sulfones with Morita–Baylis–Hillman (MBH) carbonates, in which a strong Brønstedbase, tert‐butoxy anion, generated in situ from a tertiary amine catalyst and MBH carbonate, is crucial in activating unstabilized nucleophiles. The γ‐regioselective alkylation products were
2-Phenylsulfinyl-nitro-pyridine, Verfahren zu ihrer Herstellung und ihre Verwendung
申请人:BAYER AG
公开号:EP0337560A2
公开(公告)日:1989-10-18
Die Erfindung betrifft 2-Phenylsulfinyl-nitro-pyridine der Formel
in der
R₁ Wasserstoff, Alkyl oder Halogen bedeutet und
R₂,R₃,R₄,R₅ und R₆ unabhängig voneinander für Wasserstoff, Halogen, Alkyl, Haloalkyl, Alkoxy, Haloalkoxy, Cyano, Nitro, Carboxy, Alkoxycarbonyl, Carbonamido, N-Alkyl- oder N,N-Dialkylcarbonamido, Acyl oder primäres, sekundäres oder tertiäres Amino stehen.
Verfahren zu ihrer Herstellung und ihre Verwendung als Mikrobizide für den Materialschutz und Fungizide im Pflanzenschutz.
A PROCESS FOR THE SYNTHESIS OF SULFONES AND SULFONAMIDES
申请人:COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX
ÉNERGIES ALTERNATIVES
公开号:EP3178811A1
公开(公告)日:2017-06-14
The present invention relates to a one pot single step process for the synthesis of a compound containing a sulfonyl functional group, in particular a sulfone or a sulfonamide, comprising the step of mixing together a silane, an SO2 source, an electrophilic compound, an activating compound and optionally a metal catalyst. Labeled compounds containing a sulfonyl functional group, in particular labeled sulfones or sulfonamides can also be synthesized by the process of the invention.
The present invention also concerns the use of unlabeled or labeled sulfonyl containing compounds, in particular labeled or unlabeled sulfones and sulfonamides, obtained by a process according to the invention in the manufacture of vitamins, pharmaceuticals, adhesives, acrylic fibers and synthetic leathers, pesticides, and fertilizers, for example.
The present invention further relates to a process for producing tracers and tracers comprising a step of synthesis of a labeled sulfonyl containing compounds, in particular labeled sulfones and sulfonamides, obtained by a process according to the invention.