solved problems of synthesis 3

1. Darkar nei dekhanor

2. 1. /EtOH
2. H3O+
WOrk-up
/THF
P2O5/Heat
/Ether
1.
2. H3O+
WOrk-up
For answering questions of synthesis
always provide reagents, solvents and
necessary reaction condition, if possible
how long time the reaction takes to
occur.
NOTE:

3. Eta debe na.
Try to avoid Heating
with Acid as it can facilitate
dehydration
Protect using Me3SiCl
or if you use bezyl protection
deprotect using hydrogenation
H2/metal cat.

4. Thermodynamically
more stable
You will get
this.

5. This is OK. But You have to go
through protection-deprotection
path.