21691-50-9 L-Ala-Otbu

Ikozwe muri esterisation reaction ya acide organique cyangwa aside organic cyangwa alcool.Inzoga cyangwa fenol cyangwa acide anhydride, inzoga na Ethylene, aside irike yubusa hamwe nibikomoka kuri azote bishobora nanone kubyara ester.Hydrogene kuri alpha-karubone muri molekile ya ester itakaza inzoga ya molekile hamwe nindi ester ya molekile mugihe cya alkaline kugirango itange β-keto ester, ibyo bita estraction contraction reaction.Kurugero, acetyl acetate ikorwa kugirango habeho acetyl Ethyl acetate.Iyi reaction ningirakamaro cyane muri synthesis.
Izina rya ester rikomoka ku izina rihuye na aside ya karubonike na alcool cyangwa fenol, nka "aside runaka na ester runaka".Uruziga ruzenguruka rwitwa lactone (lactone).Imiterere yimiti ya ester isa na amyl niche anhydride, ikunda hydrolysis, alcool na ammonia reaction.Ester nkeya-ester ni impumuro nziza kandi ihindagurika idafite ibara, kandi ester yateye imbere irakomeye.Estes ni umusemburo wingenzi nibikoresho fatizo ngengabihe, kandi est est ni ibiyobyabwenge ubwabyo.Ukurikije ubwoko bwa acide, ester irashobora kugabanywamo aside estorganic ester na ester acide organic.Etate, Ethyl acetate ni ibinure bya ester, acetate ni ester ya aromatic, na namanonate ni cyclic ester.
Ubusanzwe ester ni amazi atagira aho abogamiye.Ester iterwa nubwoko bwamavuta hamwe ninzoga zuzuye zifite impumuro yimbuto, ishobora gushonga mumazi, kandi biragoye gushonga mumazi.Amashanyarazi ya ester amwe ni make kandi akenshi arashya.Umwuka urashobora kwinjizwa ninzira zubuhumekero, na ester yamazi irashobora kwinjizwa nuruhu.Nyuma yo kwinjizwa, irashonga muri plasma, kandi zimwe murizo zisohoka mu bihaha no mu mpyiko.Nyuma ya hydrolysis, hindukira muburyo busanzwe bwo guhinduranya.Usibye bike mubice bya ester, ibyinshi muribi bifite uburozi bukabije nuburozi bukabije, kandi ibyinshi muribi ni micro-toxic to class medium toxic toxic, kandi ibyinshi muri byo ntabwo ari uburozi.Hano hari esters 38 mumatsinda yimpumuro yicyayi.Ahanini: ① ibinure bya ester: biterwa n'inzoga n'ibinure, nka Ethyl acetate, hexyl hexyate.Est Aromatic ester: ikorwa n'inzoga na aside ya aromatiya, nka Shun-3-hexylzyl.Est estcin esters: iterwa n'inzoga na cyclocar, nka hyaside ya jasmone.Muri rusange ester ntaho ibogamiye, ishobora kuba hydrolyz kandi ikabyara inzoga na aside.Umubare muke wa karubone mubisanzwe ni amazi meza, kandi numubare munini wa karubone ni amazi kandi ibintu bitangirika mumazi.