Bimolecular Dehydration (-H2O) Flashcards
1
Q
purpose?
A
create an ether or mixture of ethers from 2 ROHs
2
Q
requires?
A
2 ROHs
H2SO4 (dilute, aq)
heat at 140ºC or lower if 2º / 3º ROH
3
Q
best alcohol substrate?
A
unhindered 1º
4
Q
mechanism for 1º
A
Sn2 by 2nd ROH
5
Q
bad alcohol substrates
A
2º & 3º
E1/Sn1 compete
6
Q
what products form if you use 2 different ROH S.M.
A
ROH + R’OH —> ROR + ROR’ + R’OR’
7
Q
if intramolecular
A
you will see 2 OH groups on an alkane at either end
(ex. OHCH2CH2CH2CH2OH)
makes ether ring + H2O
