71) Among the following compounds, E / Z isomerism is possible for A) 2methylbut2ene B) 2methylbut1ene C) 3methylpent1ene D) 3methylpent2ene 71) िनÌना ं िकत यौिगकŌ म¤ से िकसम¤ E / Z समावयवता स ं भव है A) 2मेिथल Êयुट2इन B) 2More alkene examples of E/Z isomerism 3methylpent2ene, can be drawn as E/Z isomers using structural and skeletal formula , , methylpent2ene and , Z3methylpent2ene Note the priority order CH 3 CH 2 > CH 3 > H from the CahnIngoldPrelog priority rules (6 CA Use But2ene as an example of E/Z isomerism b Explain why but1ene does not show E/Z isomerism 3 Explain the special case of cistrans isomerism a Use pent2ene as an example of cistrans isomerism b Explain why 3methylpent2ene does not display cis trans isomerism, but does display E/Z isomerism c
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