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Oct . 14, 2022 11:19 Bwererani ku mndandanda

Kodi tanthauzo la intermediates mankhwala



Tanthauzo la intermediates mankhwala ndi kuti awiri kapena kuposa zinthu zosiyana ndi katundu wapadera mankhwala kudzera mwadongosolo mankhwala zimachitikira moyenerera. Imakhalabe ndi mphamvu yapadera ya zipangizo zake, imagonjetsa chilema chogwiritsira ntchito mankhwala amodzi, ndikuwongolera mphamvu ndi chitetezo cha mankhwala.

Mankhwala apakati ndi njira yatsopano yopangira, yomwe yakhala ikugwiritsidwa ntchito kwambiri muzinthu zambiri zofunika kwambiri za mankhwala kunyumba ndi kunja, monga mankhwala ophera tizilombo, utoto, zonunkhira, ndi zina zotero. Mankhwala apakati amatchedwanso pharmaceutical intermediates. Ndi m'gulu la mankhwala abwino ndi intermediates mankhwala. Amatanthawuza za zotumphukira zamitundu iwiri kapena kupitilira apo kudzera mu njira zamakhemikolo kapena kaphatikizidwe kopanga, kapena zongochitika mwachilengedwe, koma anthu sanadziwe kaphatikizidwe ka mankhwala a organic compounds. Mankhwala intermediates ndi zabwino mankhwala mankhwala, monga herbicides, mankhwala ophera tizilombo, zotsukira, zonunkhira, mankhwala, etc. General pharmaceutical intermediates ndi okwera mtengo.

Tanthauzo: 1. Mankhwala apakatikati Mankhwala opangira mankhwala amatanthauza mankhwala omwe ali ndi mankhwala ofanana koma osiyana, omwe amadziwikanso kuti zipangizo zatsopano. Mankhwala apakatikati makamaka amatchula za kapangidwe ka mankhwala ofanana, koma pali kusiyana kwina pakati pa ethyl acetate ndi n-butyl propionate, methyl methacrylate ndi methyl acrylate. Choncho, mankhwala apakatikati amapangidwa pogwiritsa ntchito njira zophatikizira mankhwala okhala ndi mapangidwe ofanana ndi mankhwala, ena amakhala ndi kukhazikika kwamankhwala abwino, ena amatha kusungunuka mu zosungunulira za polar, ena amakhalabe ndi zabwino zapoizoni yochepa komanso yosavuta kugwiritsa ntchito, ndipo amapangidwa ndi njira zosiyanasiyana.

  1. Mankhwala apakatikati atha kugawidwa malinga ndi magwero awo ndi ntchito, monga momwe zilili pansipa. (1) Imachotsedwa kuzinthu zachilengedwe kudzera mukusintha kwamankhwala kochokera. Mamolekyu otumphukirawa ndi omwe amapangidwa koyambirira mu ma homologues a mankhwala a makolo, monga: ethyl acetoacetate ndi diethyl malonate; Amino acid methyl ester ndi resorcinol methanolate. (2) Kaphatikizidwe ka mankhwala. Kuphatikizapo kaphatikizidwe kachindunji ndi kaphatikizidwe kosalunjika. Zomwe kaphatikizidwe ndizosavuta, ma reactants amapangidwa, ndipo zokolola zimakhala zambiri. Chitsanzo chabwino ndi esterification ya dimethyl malonate ndi ethyl phenylacetate ndi ethyl phenylacetate ndi diethyl malonate kupyolera mu lactic acid. Mwachitsanzo, isooctyl phenylacetate ndi ethyl malonate angapezeke mwa kusinthana mwachindunji ethylphenylacetic acid ndi diethyl malonate.
  2. Kupanga mankhwala intermediates ndi njira yatsopano yopangira, yomwe yakhala ikugwiritsidwa ntchito kwambiri muzinthu zambiri zofunika za mankhwala abwino kunyumba ndi kunja, monga mankhwala ophera tizilombo, utoto, zonunkhira, ndi zina zotero. Mankhwala opangira mankhwala amadziwikanso kuti intermediates mankhwala.

Kupanga mankhwala intermediates tichipeza njira ziwiri: kaphatikizidwe ndi kuyeretsa. Chinthu choyamba ndikudutsa mu kaphatikizidwe kachitidwe. Zopangira zopangidwa zimayengedwa kuti zifikire chiyero, ndipo pamapeto pake zimagulitsidwa ngati zinthu.

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