Izomeria compusilor organici
Izomeria compusilor organici
Izomeria compusilor organici
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ConfiguraŃia relativă după convenŃia<br />
Fischer – Rosanoff (D,L)<br />
ConfiguraŃiile stabilite în raport cu substanŃa etalon (aldehida glicerică) – notate prin convenŃia D, L<br />
H<br />
CHO<br />
OH<br />
CH 2OH<br />
H<br />
CHO<br />
CH2OH H OH<br />
D(+) glicerinaldehidã<br />
CHO<br />
OH<br />
CH 2OH<br />
oxidare<br />
D(+) glicerinaldehidã<br />
H<br />
COOH<br />
OH<br />
CH 2OH<br />
PBr 3<br />
D(-) acid gliceric<br />
CHO<br />
HOH2C HO H<br />
CHO<br />
COOH<br />
H OH H OH<br />
CH2OH D (+) aldehidã glicericã<br />
CH3 D(-) acid lactic<br />
CHO<br />
HO H<br />
L(-) glicerinaldehidã<br />
H<br />
COOH<br />
OH<br />
CH 2Br<br />
reducere<br />
acid D(-)3-brom-2hidroxipropionic<br />
H<br />
CH 2OH<br />
H<br />
COOH<br />
CH2OH D (-)acid gliceric<br />
COOH<br />
CH 3<br />
OH<br />
D(-) acid lactic<br />
OH