[Heli0x]

I'm having trouble understanding why product nr.2 is formed, and not nr.1:



I'm guessing it has something to do with the E/Z-classification, though I'm not sure whether the Phenyl is to be interpreted as one unit, or to merely include the connected carbon from the ring.

If so then then, would that mean that the E formation, in which the methyl groups are trans-positioned, would dominate, rendering the second molecule the main one?

[Trave11er]

This because in order for E2 to proceed hydrogen and leaving group should be in kind of trans position to each other and when they are the 2. product is the only option.

[Heli0x]

Oh I see. Thank you very much.