I have around 80 folders. I need to rename *.iso files in the folders to match the folder name in the first place. eg.

folder/this.is.thefolder./ax.iso
folder/some.another.folder/ai.iso
folder/new.name/lks.iso

What I want to do is rename all the iso files in the folders to match the first folder name. like

folder/this.is.thefolder./this.is.thefolder.iso
folder/some.another.folder/some.another.folder.iso
folder/new.name/new.name.iso