{"product_id":"medicinskaq-himiq-von-sunitha-n-und-appa-rao-b","title":"Medicinskaq himiq","description":"\u003cp\u003eSINTEZ I HARAKTERISTIKA 3,5-DIMETILPIRAZOLACEL': Sintezirowat' 3,5-dimetilpirazol w laboratorii i oharakterizowat' syroj i perekristallizowannyj produkt.NEOBHODIMOE OBORUDOVANIE\/INSTRUMENTY: Kondensator obratnogo holodil'nika, kruglodonnaq kolba, menzurka, steklqnnaq palochka, pipetka, woronka Bühnera, kolba dlq fil'trowaniq, wodqnaq banq, chasowoe steklo, kapillqrnaq trubka, trubka Tile, termometr, älektronnye wesy, wakuumnyj nasos i fil'trowal'naq bumaga.NEOBHODIMYE HIMIKATY: Acetilaceton, gidrazingidrat, ätilowyj spirt i n-gexan\/petrolejnyj äfir.HIMIChESKAYa REAKCIYa: MEHANIZM REAKCII: PRINCIP: Zameschennye pirazoly poluchaüt kondensaciej 1,3-diketonow s gidrazinom. Naprimer, acetilaceton i gidrazin daüt 3,5-dimetilpirazol. Obrazowawshiesq enamin i imin podwergaütsq ciklizacii s polucheniem produkta.PROCEDURY: 1. Voz'mite 0,06 mol' gidrazina gidrata w kolbu emkost'ü 250 ml.2. Dobaw'te 25 ml ätilowogo spirta pri postoqnnom peremeshiwanii.3. Pomestite kolbu w ledqnuü wodu ili ledqnuü banü i podozhdite 10 minut.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9786205816837\"\u003e\u003ch3\u003ePukowodstwo po laboratornym rabotam\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9786205816837","offer_id":46436294066501,"sku":"9786205816837","price":24.8,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/99a100e4-7b30-4b38-bcf1-7a94bc44c4e3.jpg?v=1758516235","url":"https:\/\/shop.autorenwelt.de\/en\/products\/medicinskaq-himiq-von-sunitha-n-und-appa-rao-b","provider":"Autorenwelt Shop","version":"1.0","type":"link"}