Is it true that E1 needs weak Nu-

[navneetdh]

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I was studying E1 and came across the statement

E1 favored by Weak Nu-

is this true?

also if so then since SN1 and E1 prefer same conditions, would SN1 also be favored by weak Nu-? or is it that only E1 is favored by weak Nu- and SN1 still need strong large Nu- in protic solvents?

would they both also be favored by bulky Nu-?

 

[AndyK]

I was studying E1 and came across the statement

E1 favored by Weak Nu-

is this true?

also if so then since SN1 and E1 prefer same conditions, would SN1 also be favored by weak Nu-? or is it that only E1 is favored by weak Nu- and SN1 still need strong large Nu- in protic solvents?

would they both also be favored by bulky Nu-?

I'm pretty sure E1 favors a strong base/nucleophile like KOH.

 

[276640]

E1 and SN1 are both favored by the same factors: highly polar protic solvents, highly branched carbon chains (to make stable carbocations), good leaving groups (ex. I-), and weak nucleophiles in low concentration. As to which way a reaction would drive to, either E1 or SN1, it is difficult to tell and usually you will get a mixture of products. However, if the temperature is pretty high, E1 is then typically favored. Hopes this helps.

 

[navneetdh]

Thank You everyone. This helps quite a bit 🙂

E1 and SN1 are both favored by the same factors: highly polar protic solvents, highly branched carbon chains (to make stable carbocations), good leaving groups (ex. I-), and weak nucleophiles in low concentration. As to which way a reaction would drive to, either E1 or SN1, it is difficult to tell and usually you will get a mixture of products. However, if the temperature is pretty high, E1 is then typically favored. Hopes this helps.

This is exactly what I had read and I was confused about it. But I guess I understand a little more now.

Thank You👍