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SCHEMA 2.3-22<br />

FIGURA 2.3- 17 Spectrul IR al (8E,10Z)-8,10-tetradecadien-1-olului<br />

Spectrul IR (film,cm -1 ) al (8E,10Z)-8,10-tetradecadien-1-olului (233) prezintă benzi<br />

caracteristice sistemelor dienice conjugate la 1600 (C=C), 3000 (=C-H), 1000 (-C-H). În<br />

spectru se mai observă o bandă largă şi intensă la 3200-3400(O-H) caracteristică alcoolilor.<br />

[272-274] Figura 2.3-17<br />

Prin oxidarea (8E,10Z)-8,10-tetradecadien-1-olului (233) cu PCC [284] se obţine<br />

(8E,10Z)-8,10-tetradecadien-1alul (196) de puritate izomerică 87%, cu un randament de 70%.<br />

C 3H 7<br />

SCHEMA 2.3-23<br />

H<br />

C C C C (CH2)7 OH<br />

H H H<br />

233<br />

PCC H<br />

C3H7 C C C C (CH2) 6 CHO<br />

CH2Cl2 H H H<br />

20°C/2h<br />

η=70%<br />

196<br />

32

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