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- Solutions 27

Which do you expect to be the more stable conformation of *cis*-1,3-dimethylcyclobutane, A or B? Why?

So, here we've got two different confirmations of cis 1,2-dimethyl cyclobutane and it's our job to figure out which one of them is more stable. So, here it might be a little bit unclear but we've got our fourth carbon, right? It's not just of cyclopropane and this one over here, so, which one of these is going to be more stable? Well, actually it's going to be the one on the right because guys they're far away from each other, right? We can think about this as analogous to a chair, these two groups up here would be the axial position but we know that they prefer to be in equatorial and, right? look it's just how far away they are from each other here versus here, okay? So, definitely because of sterics this is are more stable conformation. So guys, let me know that any questions, if not, let's move on.