posted by Jules on .
Could someone help out with the second question. Its about reagents.
Click the link for the question.
All of the . are replaced with * in the link
It is diffiuclt to read.
In the first one you need to cleave the double bond as it look like C=CH2 on the ring. In which case ozonolysis with O3 is easiest, but I can't make out the other reagnet/solvet. Then treat the cyclopentanone with PhMgBr so B looks best. Unusual set of steps as cyclopentanone is relatively inexpensive.
In the second case you need to form the cis diol, so either A or B would achieve this, B can be more expensive.