pinaconen.

Brit.

/ˈpɪnəkəʊn/, U.S.

/ˈpɪnəˌkoʊn/

Origin: A borrowing from German. Etymons: German Pinakon, Pinacon.

Etymology: < German Pinakon (G. Städeler 1859, in Ann. der Chem. u. Pharm. 111 279; also Pinacon (1860)) < ancient Greek πινακ- , πίναξ pinax n. (in allusion to the fact that the hydrated form of the compound crystallizes in thin tablets) + German -on -one suffix. Compare French pinacone (1876 or earlier). Compare pinacol n.

Chemistry.

Originally: the simplest pinacol, 1,4-dimethylpropan-2,3-diol, (CH₃)₂(OH)C—C(OH)(CH₃)₂. In later use: any pinacol.

ΘΚΠ

the world > matter > chemistry > organic chemistry > ketones > [noun] > cyclic ketones

pinacone1866

menthone1889

fenchone1891

pyrone1891

tropinone1896

humulone1916

lupulone1919

isoflavone1925

irone1948

tropone1951

the world > matter > chemistry > organic chemistry > alcohols > [noun] > dihydric alcohols or glycols > pinacol

pinacone1866

pinacol1911

1866 H. Watts Dict. Chem. IV. 648 Liquid pinacone is a colourless syrup.

1884 H. E. Roscoe & C. Schorlemmer Treat. Chem. III. ii. 12 The pinacones decompose very readily into water and the ketones, to which the name of pinacolines is given.

1913 T. H. Pope tr. E. Molinari Treat. Org. Chem. II. 182 A special group of glycols, the pinacones, containing two adjacent tertiary alcohol groups.

1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) viii. 117 Interesting substances called pinacones (alkyl substituted glycols) are formed at the same time.

1973 B. J. Hazzard tr. Organicum 587 In textbooks, the dihydric alcohol here termed pinacol is often called pinacone and the ketone produced by the rearrangement pinacoline.

1994 Jrnl. Org. Chem. 59 5222/1 A pinacol/pinacone rearrangement after the rupture of a CO bond in the intermediate.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	pinacone
释义	pinaconen. Brit. /ˈpɪnəkəʊn/, U.S. /ˈpɪnəˌkoʊn/ Origin: A borrowing from German. Etymons: German Pinakon, Pinacon. Etymology: < German Pinakon (G. Städeler 1859, in Ann. der Chem. u. Pharm. 111 279; also Pinacon (1860)) < ancient Greek πινακ- , πίναξ pinax n. (in allusion to the fact that the hydrated form of the compound crystallizes in thin tablets) + German -on -one suffix. Compare French pinacone (1876 or earlier). Compare pinacol n. Chemistry. Originally: the simplest pinacol, 1,4-dimethylpropan-2,3-diol, (CH₃)₂(OH)C—C(OH)(CH₃)₂. In later use: any pinacol. ΘΚΠ the world > matter > chemistry > organic chemistry > ketones > [noun] > cyclic ketones pinacone1866 menthone1889 fenchone1891 pyrone1891 tropinone1896 humulone1916 lupulone1919 isoflavone1925 irone1948 tropone1951 the world > matter > chemistry > organic chemistry > alcohols > [noun] > dihydric alcohols or glycols > pinacol pinacone1866 pinacol1911 1866 H. Watts Dict. Chem. IV. 648 Liquid pinacone is a colourless syrup. 1884 H. E. Roscoe & C. Schorlemmer Treat. Chem. III. ii. 12 The pinacones decompose very readily into water and the ketones, to which the name of pinacolines is given. 1913 T. H. Pope tr. E. Molinari Treat. Org. Chem. II. 182 A special group of glycols, the pinacones, containing two adjacent tertiary alcohol groups. 1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) viii. 117 Interesting substances called pinacones (alkyl substituted glycols) are formed at the same time. 1973 B. J. Hazzard tr. Organicum 587 In textbooks, the dihydric alcohol here termed pinacol is often called pinacone and the ketone produced by the rearrangement pinacoline. 1994 Jrnl. Org. Chem. 59 5222/1 A pinacol/pinacone rearrangement after the rupture of a CO bond in the intermediate. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < n.1866
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