Cannizzaron.

Brit.

/ˌkanᵻˈzɑːrəʊ/, U.S.

/ˌkænəˈzɑroʊ/

Forms: 1800s– Cannizzaro, 1900s– Canizzaro (irregular), 1900s– Cannizaro (irregular).

Origin: From a proper name. Etymon: proper name Cannizzaro.

Etymology: < the name of Stanislao Cannizzaro (1826–1910), Italian chemist, who first described this reaction in 1853 ( Ann. der Chem. u. Pharm. 88 129).

Chemistry.

attributive or in the genitive. Designating a reaction of an aldehyde with a strong base to form a primary alcohol and a carboxylic acid.Such a disproportionation reaction occurs only in aldehydes that contain no α-hydrogen atom.

ΘΚΠ

the world > matter > chemistry > organic chemistry > chemical processes or reactions > processes or reactions attributed to chemists > [noun] > others

Skraup1886

Friedel–Crafts1892

Schotten–Baumann method1895

Cannizzaro1897

Grignard('s) reaction1904

Liebermann–Burchard reaction1904

Raschig process1920

Fischer–Tropsch1933

Schmidt reaction1937

1897 J. T. Hewitt Org. Chem. Manip. vi. 233 Benzaldehyde gives in this way benzyl alcohol and benzoic acid (Cannizzaro's reaction).

1912 Chem. Abstr. 6 1431 The conversion of aromatic aldehydes by alcoholates into acids and alcs. (Cannizaro's reaction) is found to be untenable.

1964 N. G. Clark Mod. Org. Chem. x. 187 Cannizzaro reaction. When aldehydes containing no hydrogen atoms on the α-carbon atom (adjacent to the functional group) are treated in the cold with concentrated aqueous or alcoholic sodium hydroxide, a dismutation involving two molecules takes place. One molecule is reduced to the alcohol, while the other is oxidized to a salt of the corresponding carboxylic acid.

2006 J. M. Hornback Org. Chem. (Internat. Student ed.) xx. 888 The Cannizzaro reaction begins with the attack of the hydroxide ion nucleophile at the electrophilic carbon of the aldehyde.

This entry has been updated (OED Third Edition, September 2018; most recently modified version published online December 2021).

单词	cannizzaro
释义	Cannizzaron. Brit. /ˌkanᵻˈzɑːrəʊ/, U.S. /ˌkænəˈzɑroʊ/ Forms: 1800s– Cannizzaro, 1900s– Canizzaro (irregular), 1900s– Cannizaro (irregular). Origin: From a proper name. Etymon: proper name Cannizzaro. Etymology: < the name of Stanislao Cannizzaro (1826–1910), Italian chemist, who first described this reaction in 1853 ( Ann. der Chem. u. Pharm. 88 129). Chemistry. attributive or in the genitive. Designating a reaction of an aldehyde with a strong base to form a primary alcohol and a carboxylic acid.Such a disproportionation reaction occurs only in aldehydes that contain no α-hydrogen atom. ΘΚΠ the world > matter > chemistry > organic chemistry > chemical processes or reactions > processes or reactions attributed to chemists > [noun] > others Skraup1886 Friedel–Crafts1892 Schotten–Baumann method1895 Cannizzaro1897 Grignard('s) reaction1904 Liebermann–Burchard reaction1904 Raschig process1920 Fischer–Tropsch1933 Schmidt reaction1937 1897 J. T. Hewitt Org. Chem. Manip. vi. 233 Benzaldehyde gives in this way benzyl alcohol and benzoic acid (Cannizzaro's reaction). 1912 Chem. Abstr. 6 1431 The conversion of aromatic aldehydes by alcoholates into acids and alcs. (Cannizaro's reaction) is found to be untenable. 1964 N. G. Clark Mod. Org. Chem. x. 187 Cannizzaro reaction. When aldehydes containing no hydrogen atoms on the α-carbon atom (adjacent to the functional group) are treated in the cold with concentrated aqueous or alcoholic sodium hydroxide, a dismutation involving two molecules takes place. One molecule is reduced to the alcohol, while the other is oxidized to a salt of the corresponding carboxylic acid. 2006 J. M. Hornback Org. Chem. (Internat. Student ed.) xx. 888 The Cannizzaro reaction begins with the attack of the hydroxide ion nucleophile at the electrophilic carbon of the aldehyde. This entry has been updated (OED Third Edition, September 2018; most recently modified version published online December 2021). < n.1897
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