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Structure and Z/E configuration of 1-bromo-1-chloropropene

Short answer

1-Bromo-1-chloropropene, CH₃–CH=C(Br)Cl: higher priority Br over Cl at C1, CH₃ over H at C2. Br and CH₃ on the same side gives Z; on opposite sides gives E.

Draw the structure and specify Z and E configuration of 1-Bromo-1-chloropropene.

1-Bromo-1-chloropropene is CH₃–CH=C(Br)Cl.

   CH₃     Br                 CH₃     Cl
     \    /                     \    /
      C=C                         C=C
     /    \                     /    \
    H      Cl                   H      Br
      (Z)                         (E)

Priorities: at C1, Br (Z = 35) > Cl (Z = 17); at C2, CH₃ > H. Higher groups Br and CH₃ on the same side give Z; on opposite sides give E.

✓ Answer checked by Claude Opus 5.5 (high effort)

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