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QCM20 CC2015


Go to solution Solved by zazouette,

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Posted

Salut ! Je ne comprend pas pourquoi l'item B est faux, pourtant on passe bien d'un 2R3S --> Z --> SR/RS donc RS/SR (sans forme méso) doncénantiomères non ?

 

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  • Solution
Posted

@MaeDu salut !

c'est une E2 et tu dois appliquer la règle de Zaitsev, donc il y a 2 composés possibles, et dans le B tu as une isomérie Z/E si je me trompe pas

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