CHEM 123 Lecture Notes - Lecture 28: Cyclohexane Conformation, Cycloalkane, Up & Up
48
CHEM 123 Full Course Notes
Verified Note
48 documents
Document Summary
Absolute model wedge = points towards you = up axial position or up equatorial. Absolute model dash = points away = down equatorial position or down axial. Linear c --- n interacts less than tetrahedral nh2 (blob) Eqm favors nh2 in equatorial, c---n @axial ok. >cis/trans two group substituent relationships (only if other group is h atoms) Substituents on same side of ring (both top or bottom-both up or both. Down -aka both wedge or dash, no relationship between placement on chair conformation) Chair-down & down or up & up (either equatorial or axial) Substituents on opposite sides of ring (one top and one bottom-one up and one down or vice versa-aka one dash & one wedge and vice versa) 1. (prefix) longest c parent chain is cycloalkane ring parent name = cyclo(ie. hex)ane a. If not, just name it regularly (i. e. [cycloalkane substituent]heptane) 2. (substituent) 3-cyclo(ie. hex)yl: tip: number substituents with lowest number is possible b.
