Why e2 reaction is sterio selective ?

check this material which may help you to understand this topic very much

Thank you Simun😊😊

here one products predominates over other..more stable product is formed inwhich anti conformation is present

no, simun.. here we will talk about only anti products. if two antipriducts are possible then one will be major

check it

in this picture the Hb is in dash ...and br is also in dash so here antiperiplanar structure how possible

pls help in this ...

yes, but only one Anti product is possible then it is known as stereospecific but more than 1 anti products are formed then there is one product major so it is known as stereoselectivity

can u give ur video lecture about Ei ...

yes, wait

ok

check it https://youtu.be/_iXlIUJykLY

I m not asking about this asking about ur video lecture

No, I don't have my own video

ok sry

check it

here two antiperiplanar elimination is possible but only one product is major

got it??

no

okay tell me what is your doubt so i can help you

first of all try to understand what is stereoselectivity. stereoselectivity simply mean if in a reaction if more than one products are formed and out of all the products only one product is formed as a major and another remaining products will be minor. this is the stereoselectivity. if in a reaction, only one product is formed so it is stereospecific

got it simun??

yes ...perfectly I got it ...tq

now same case in E2, if there is two antiperiplanar alpha H is present then there is possible to form two products. so out of two one will be major

now check this image,

hope you will get it..

please accept the answer 🙏😊

I m asking a question in my comment pls solve this

yes

can u find my question

no, i didn't get it. you can share it in new query so we can discuss properly

the image u send ..in this ..br and hb are in dash ....so how it will be anti periplanar to each other ..?

wait..

ok

convert it to newman conformation so you can get the answer

please mark my answer as best if you really satisfied 🙏🙏 I'll be happy to help you

when it converted to fisher projection then the ha and Br are in same side so how it will be anti periplanar

no, simun don't solve it using fisher formula because it is eclipsed conformation. you have to change it newman

ok