I-Cesium carbonate 534-17-8 intengo yokukhiqiza

Incazelo emfushane:

I-Cesium carbonate 534-17-8


  • Igama lomkhiqizo :I-Cesium carbonate
  • I-CAS:534-17-8
  • MF:CCs2O3
  • MW:325.82
  • I-EINECS:208-591-9
  • Umlingiswa:umkhiqizi
  • Iphakheji:1 kg/isikhwama noma 25 kg/isigubhu
  • Imininingwane Yomkhiqizo

    Omaka bomkhiqizo

    Incazelo

    Igama lomkhiqizo: I-Cesium carbonate

    CAS: 534-17-8

    MF: CCs2O3

    MW: 325.82

    I-EINECS: 208-591-9

    Ubukhulu: 4.072

    Ifomu: I-Powder/Granules

    Umbala: Mhlophe

    I-Gravity ethize: 4.072

    Kuyazwela: Hygroscopic

    Usuku: 14, 2010

    BRN: 4546405

    Ukucaciswa

    Igama Lomkhiqizo

    I-Cesium carbonate

    Ukubukeka

    I-crystalline powder emhlophe

    Ubumsulwa

    99.9%

    Iphoyinti lokuncibilika

    610°C

    Iphuzu elibilayo

    333.6ºC ku-760 mmHg

    Iphoyinti le-Flash

    169.8ºC

    Ukuncibilika kwamanzi

    261 g/100 mL (20 ºC)

    Isicelo

    1. Izakhiwo eziningi ze-cesium carbonate ku-organic synthesis zivela ku-acidity ye-Lewis ethambile ye-cesium ion, eyenza inyibilike kuzincibilikisi zemvelo ezifana notshwala, i-DMF ne-ether.

    2. Ukuncibilika okuhle kuzincibilikisi zemvelo kwenza i-cesium carbonate njengesisekelo sezinto ezingaphili ezisebenzayo ukuthi ibambe iqhaza ekuphenduleni kwamakhemikhali okubangelwa ama-reagents e-palladium afana nokusabela kwe-Heck, i-Suzuki ne-Sonogashira. Isibonelo, ukusabela kwe-Suzuki cross-coupling kungazuza isivuno esingu-86% ngokusekelwa kwe-cesium carbonate, kuyilapho isivuno sokusabela okufanayo ngokubamba iqhaza kwe-sodium carbonate noma i-triethylamine kuphela ku-29% no-50%. Ngokufanayo, ekuphenduleni kukaHeck kwe-methacrylate ne-chlorobenzene, i-cesium carbonate inezinzuzo ezisobala ngaphezu kwezinye izisekelo ze-inorganic, njenge-potassium carbonate, i-sodium acetate, i-triethylamine, ne-potassium phosphate.

    3. I-Cesium carbonate nayo inesicelo esibaluleke kakhulu ekuqapheliseni ukusabela kwe-O-alkylation yama-phenol compounds.

    4. Ukuhlola kucatshangelwa ukuthi ukusabela kwe-phenol O-alkylation kuzincibilikisi ezingenawo amanzi ezibangelwa i-cesium carbonate kungenzeka kube ne-phenoloxy anions, ngakho-ke ukusabela kwe-alkylation kungase kwenzeke kuma-halogens yesibili asebenza kakhulu ajwayele ukusabela ekuqedeni. .

    5. I-Cesium carbonate nayo inokusetshenziswa okubalulekile ekuhlanganiseni kwemikhiqizo yemvelo. Isibonelo, ekuhlanganisweni kwenhlanganisela ye-Lipogrammistin-A esinyathelweni esiyinhloko sokusabela kokuvala indandatho, ukusetshenziswa kwe-cesium carbonate njengesisekelo se-inorganic kungathola imikhiqizo evaliwe enezivuno eziphezulu.

    6. Ukwengeza, ngenxa yokuncibilika okuhle kwe-cesium carbonate kuzincibilikisi zemvelo, iphinde ibe nokusetshenziswa okubalulekile ekuphenduleni okuqinile okusekelwa kwe-organic. Isibonelo, ukusabela kwezingxenye ezintathu ze-aniline kanye ne-halide esekelwe ngokuqinile iyengelwa emkhathini we-carbon dioxide ukuze kuhlanganiswe i-carboxylate noma izinhlanganisela ze-carbamate ezinesivuno esikhulu.

    7. Ngaphansi kwemisebe ye-microwave, i-cesium carbonate ingasetshenziswa futhi njengesisekelo sokubona ukusabela kwe-esterification ye-benzoic acid nama-halogen asekelwe ngokuqinile.

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    imigomo yokukhokha

    Isitoreji

    izinga lokushisa eliphansi, elingena umoya futhi elomile

    Ukuzinza

    ezinzile. Izinto ezingahambelani: ama-oxidants aqinile, ama-asidi aqinile.


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