Kaplan Organic Chemistry: Chapter 2 Isomerism Flashcards
name
amide
name compound
formic acid
name compound
acetone
name
imine
name
imide
name
thioether
name
sulfoxide
name
ether
gauche conformation
staggered conformation when 2 largest groups attached to adjacent carbons are only 60 degrees apart.
syn conformation
eclipsed conformation when 2 largest groups are interfering with one another
least stable newman projection
eclipsed. staggered/anti is the most stable
when can gauche conformation be more stable than anti conformation(when 2 largest groups are 180 degrees apart)?
when gauche conformation can allow for intermolecular hydrogen bonds can form.
if the ring has a large substituent, it is more stable if the substituent is ____
equitorial- to reduce 1,3, diaxial interactions.
if an atom is facing into the page, it is going ___ on a chair structure. If an atom is facing OUT of the page, it is going ___ on the chair structure.
if an atom is facing into the page, it is going DOWN on a chair structure. If an atom is facing OUT of the page, it is going UP on the chair structure.
in Chan-Ingold-Prelog rules, R is ___ and S is ___
R is clockwise, S is counterclockwise.
in a fischer projection, verticla lines = ____page, and horizontal lines = ____ page
in a fischer projection, verticla lines = INTO page, and horizontal lines = OUT page
VBAC- vertical-back, ( and thus, horizontal, out)
Right on fischer = ____ on haworth, left on fischer = ___ on haworth.
Right on fischer = DOWN on haworth, left on fischer = UP on haworth.
equation for number of stereoisomers
2^n
configuration differences in enantiomers
nonsuperimposable mirror images. will have OPPOSITE configurations from each other (R+S).
differences between diastereomers and enantiomers
diastereomers are NON mirror images, but are still chiral.
epimer
a type of diastereomer that differs in absolute config at 1 chiral center.
anomer
epimers that result from ring close.
geometric iosmer
diastereomers that differ around a ring OR double bond. cis or trans.
T/F: meso compounds are optically active
false. meso compounds are not optically active.
