Izomeria compusilor organici

Izomeria compusilor organici Izomeria compusilor organici

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Tipuri de chiralitate 1.Chiralitate centrală 2.Chiralitate axială 3.Chiralitate elicoidală 4.Chiralitate de tip „ansă”sau planară

H C * COOH CH 3 OH acid lactic b a a C C sp C sp 2 sp 2 COOH H C * OH H C * OH COOH acidul tartric (mezo) b R' R R R' a b C C C Exemple b a R R' O R R' H HOOC R R' conformatii impiedicate (CH 2) n R O R' R COOH H

H C<br />

*<br />

COOH<br />

CH 3<br />

OH<br />

acid lactic<br />

b<br />

a<br />

a<br />

C C<br />

sp<br />

C<br />

sp 2<br />

sp 2<br />

COOH<br />

H C<br />

*<br />

OH<br />

H C<br />

*<br />

OH<br />

COOH<br />

acidul tartric (mezo)<br />

b<br />

R' R<br />

R R'<br />

a<br />

b<br />

C C C<br />

Exemple<br />

b<br />

a<br />

R<br />

R'<br />

O<br />

R<br />

R'<br />

H<br />

HOOC<br />

R<br />

R'<br />

conformatii impiedicate<br />

(CH 2) n<br />

R<br />

O<br />

R'<br />

R<br />

COOH<br />

H

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