The correct sequence of reagents for effecting the following conversion is:
1
(1) (CH2OH)2, PTSA, \(\Delta\), (2) (tebbe's reagent), (3) H3O+, (4) KOH
2
(1) (CH2OH)2, PTSA, \(\Delta\), (2) Ph3P–CH2, (3) H3O+, (4) KOH
3
(1) (tebbe's reagent),(2) H3O+, (3) KOH
4
(1) Ph3P–CH2, (2) H3O+, (3) KOH
5
Question Not Attempted