Thaum 2 butene reacts nrog bromine Cov khoom puas yog?
Thaum 2 butene reacts nrog bromine Cov khoom puas yog?

Video: Thaum 2 butene reacts nrog bromine Cov khoom puas yog?

Video: Thaum 2 butene reacts nrog bromine Cov khoom puas yog?
Video: Thaum сборка серия 2: Место для дома. 2024, Kaum ib hlis
Anonim

Cov tshuaj tiv thaiv ntawm 2 - butene thiab bromine ua form 2 , 3-dibromobutane tsuas yog ib qho piv txwv ntawm qhov sib ntxiv cov tshuaj tiv thaiv ntawm alkenes thiab alkynes.

Tsis tas li ntawd, yuav ua li cas thaum ethene reacts nrog bromine?

Ethene reacts nrog kua bromine muab 1, 2-dibromoethane. Ethene thiab tshuaj tiv thaiv bromine kuj muab ib tug symmetrical alkyl halide compound. Ob bromine Cov atoms txuas nrog rau ob lub atoms ntawm cov pa roj carbon ethene molecule. Qhov no tshuaj tiv thaiv tuaj yeem ua tau ntawm chav tsev kub lossis qis dua qhov kub ntawm chav tsev.

Qhov thib ob, puas yog br2 ntxiv syn lossis anti? Nqe lus piav qhia: Kev kho ntawm alkenes nrog bromine ( Br2 ) muab vicinal dibromides (1, 2-dibromides). Lus Cim: Cov bromines ntxiv mus rau opposite ntsej muag ntawm ob daim ntawv cog lus ( tiv thaiv ntxiv”). Qee lub sij hawm cov kuab tshuaj tau hais hauv cov tshuaj tiv thaiv no - ib qho hnyav hnyav yog carbon tetrachloride (CCl4).

Hais txog qhov no, yuav ua li cas thaum br2 reacts nrog alkene?

Alkenes teb hauv qhov txias nrog cov kua ntshiab bromine , los yog nrog ib tug daws ntawm bromine nyob rau hauv cov organic hnyav xws li tetrachloromethane. Ob daim ntawv cog lus tawg, thiab a bromine atom ua txuas rau txhua cov pa roj carbon. Cov bromine poob nws cov xim liab-xim av kom muab cov kua tsis muaj xim.

Vim li cas cov xim ploj thaum bromine reacts nrog alkene?

Thaum twg bromine reacts nrog alkene , liab tsaus xim ntawm Br2 ploj sai li cov atoms ntawm bromine tsim daim ntawv cog lus nrog cov pa roj carbon atoms hauv ob daim ntawv cog lus. Yog tias xim ploj sai heev, peb paub tias cov compound muaj ib qhov chaw tsis txaus.

Pom zoo: