Radical 1,5-Chloropentafluorosulfanylation of Unactivated Vinylcyclopropanes and Transformation into α-SF<sub>5</sub> Ketones
作者:Fang-Fang Feng、Jun-An Ma、Dominique Cahard
DOI:10.1021/acs.joc.1c01886
日期:2021.10.1
5-chloropentafluorosulfanylation of vinyl cyclopropanes (VCPs) initiated by Et3B/O2 affords allylic pentafluorosulfanyl/homoallylic chloride products through the ring-strain release of the cyclopropane. The VCP substitution pattern was investigated. The utility of this reaction was illustrated in post-transformation of the C═C bond by ozonolysis, giving access to valuable α-SF5 carbonyl compounds.
[EN] ALPHA-PENTAFLUOROSUFANYL ALDEHYDES, KETONES AND ACIDS<br/>[FR] ALDÉHYDES, CÉTONES ET ACIDES ALPHA-PENTAFLUOROSUFANYLIQUES
申请人:UNIV NEW YORK STATE RES FOUND
公开号:WO2009026191A1
公开(公告)日:2009-02-26
Compounds of formula (I): are disclosed. In these compounds Y is -CH(OH)-, -CH(NHR6 )-, -C(=0)-, -CH=CHCO- or - formula (II) - and R1 and R2 are hydrogen, OH, alkyl, alkoxy, benzyloxy and aryl, and, when Y is -CH(OH)-, additionally alkenyl or alkynyl. Processes for the production of these compounds are also disclosed.
ALPHA-PENTAFLUOROSULFANYL ALDEHYDES, KETONES AND ACIDS
申请人:Welch John
公开号:US20110124891A1
公开(公告)日:2011-05-26
Compounds of formula (I): are disclosed. In these compounds Y is —CH(OH)—, —CH(NHR
6
)—, —C(=0)-, —CH═CHCO— or—formula (II)—and R
1
and R
2
are hydrogen, OH, alkyl, alkoxy, benzyloxy and aryl, and, when Y is —CH(OH)—, additionally alkenyl or alkynyl. Processes for the production of these compounds are also disclosed.
An Extrusion Strategy for On-Demand SF<sub>5</sub>Cl Gas Generation from a Commercial Disulfide
作者:Reza Kordnezhadian、Tim De Bels、Kexin Su、Luc Van Meervelt、Ermal Ismalaj、Joachim Demaerel、Wim M. De Borggraeve
DOI:10.1021/acs.orglett.3c03886
日期:2023.12.15
Herein we report a novel methodology for the ex situgeneration of SF5Cl by employing 4,4′-dipyridyl disulfide as a safe commercial reagent, obviating the need for lecture bottles. The method is applicable to certain SF5Cl-involving transformations by using a two-chamber reactor. Moreover, easily applying SF5Cl in different solvents is rendered feasible, while avoiding the use of glovebox techniques
在此,我们报告了一种通过使用 4,4'-二吡啶二硫化物作为安全的商业试剂异位生成 SF 5 Cl 的新方法,从而无需使用讲座瓶。该方法适用于使用两室反应器进行某些涉及SF 5 Cl的转化。此外,在不同溶剂中轻松应用 SF 5 Cl 变得可行,同时避免使用手套箱技术。该报告还建议1 H– 19 F HOESY 作为氯五氟磺酰化烯烃的简单且快速的立体化学指示。
Regioselective Gold-Catalyzed Hydration of CF<sub>3</sub>- and SF<sub>5</sub>-alkynes
The regioselective gold-catalyzed hydration of CF3- and SF5-alkynes is described. The corresponding trifluoromethylated and pentasulfanylated ketones are obtained in up to 91% yield as single regioisomers showcasing the use of CF3 and SF5 as highly efficient directing groups in this reaction. Notably, this transformation represents the first use of CF3- and SF5-alkynes in gold catalysis.