CHƯƠNG 8 AXIT CACBOXYLIC VÀ CÁC DẪN XUẤT
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<strong>AXIT</strong> <strong>CACBOXYLIC</strong><br />
3. ĐIỀU CHẾ<br />
Giữ nguyên C<br />
R<br />
CH 2 OH<br />
[O]<br />
R<br />
CHO<br />
[O]<br />
R<br />
COOH<br />
Giảm mạch C<br />
R<br />
C O O R '<br />
N a O H<br />
R<br />
C O O N a<br />
H + R C O O H<br />
[O]<br />
R CH CH R' R COOH + R' COOH<br />
R<br />
[O]<br />
COOH<br />
Tăng 1 C<br />
R<br />
X<br />
KCN<br />
R<br />
CN<br />
H 2 O/H + R COOH<br />
R MgX CO 2<br />
R COOMgX H 2O/H + R COOH
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