diethyln.

/dʌɪˈɛθɪl/

Etymology: < di- comb. form + ethyl n.

Chemistry.

A name for the group C₄H₁₀ (butyl hydride or butane), considered as a double molecule of the radical ethyl.

ΚΠ

1877 H. Watts Fownes's Man. Elem. Chem. (ed. 12) II. 47 Normal Butane, Diethyl, or Methyl-propyl, occurs in natural petroleum, and in the distillation-products of Cannel and Boghead coal.

Compounds

C1. Denoting two equivalents of the monad radical ethyl (C₂H₅), replacing two atoms of hydrogen in a compound, as diˈethylaˌmineNH(C₂H₅)₂, diethyl carbinolCOH·H·(C₂H₅)₂, diethylstilbœstrol (or diethylstilbestrol), C₁₈H₂₀O₂, a synthetic compound having œstrogenic properties; = stilboestrol n.

ΚΠ

1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) viii. 241 Diethylamine, in which 2 atoms of hydrogen are replaced by 2 of ethyle.

1866 H. E. Roscoe Lessons Elem. Chem. xxxii. 287 Acetal is isomeric with diethyl glycol.

1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxx. 307 A hydrocarbon..called diethyl or butyl hydride.

1877 H. Watts Fownes's Man. Elem. Chem. (ed. 12) II. 218 Diethylamine behaves with cyanic acid like ammonia and ethylamine, giving rise to diethyl-urea, CH₂(C₂H₅)₂N₂O.

1880 Boston Jrnl. Chem. Dec. 137/2 The monethyl and diethyl phosphines have been prepared.

1938 E. C. Dodds et al. in Nature 5 Feb. 248/2 In this way 4:4′-dihydroxy-αβ-diethylstilbene (diethylstilbœstrol) was obtained.

1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 272/2 Diethylstilbœstrol..confers the mating instinct on ovariectomised animals.

1944 Ann. Reg. 1943 359 Carcinoma of the prostate was successfully treated by oral administration of the synthetic œstrogen diethylstilbœstrol.

1969 Daily Tel. 18 Dec. 15/8 Heavy doses of the synthetic oestrogen diethylstilbestrol are being given to prevent pregnancy in rape victims.

C2.

diethyl ether n. Chemistry = ether n. 5a.

ΚΠ

1864 R. Galloway 2nd Step in Chem. viii. 358 Lactate of diethyl ether.

1936 S. Glasstone Recent Adv. in Gen. Chem. ix. 418 Some ethers, e.g. , methyl ethyl, diethyl and methyl propyl ethers.

2006 J. M. Hornback Org. Chem. (Internat. Student ed.) ii. 49 Many organic compounds..are often soluble in less polar solvents such as ethanol, diethyl ether ( CH₃CH₂OCH₂CH₃), and dichloromethane (CH₂Cl₂).

This entry has not yet been fully updated (first published 1895; most recently modified version published online September 2019).

单词	diethyl
释义	diethyln. /dʌɪˈɛθɪl/ Etymology: < di- comb. form + ethyl n. Chemistry. A name for the group C₄H₁₀ (butyl hydride or butane), considered as a double molecule of the radical ethyl. ΚΠ 1877 H. Watts Fownes's Man. Elem. Chem. (ed. 12) II. 47 Normal Butane, Diethyl, or Methyl-propyl, occurs in natural petroleum, and in the distillation-products of Cannel and Boghead coal. Compounds C1. Denoting two equivalents of the monad radical ethyl (C₂H₅), replacing two atoms of hydrogen in a compound, as diˈethylaˌmineNH(C₂H₅)₂, diethyl carbinolCOH·H·(C₂H₅)₂, diethylstilbœstrol (or diethylstilbestrol), C₁₈H₂₀O₂, a synthetic compound having œstrogenic properties; = stilboestrol n. ΚΠ 1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) viii. 241 Diethylamine, in which 2 atoms of hydrogen are replaced by 2 of ethyle. 1866 H. E. Roscoe Lessons Elem. Chem. xxxii. 287 Acetal is isomeric with diethyl glycol. 1869 H. E. Roscoe Lessons Elem. Chem. (new ed.) xxx. 307 A hydrocarbon..called diethyl or butyl hydride. 1877 H. Watts Fownes's Man. Elem. Chem. (ed. 12) II. 218 Diethylamine behaves with cyanic acid like ammonia and ethylamine, giving rise to diethyl-urea, CH₂(C₂H₅)₂N₂O. 1880 Boston Jrnl. Chem. Dec. 137/2 The monethyl and diethyl phosphines have been prepared. 1938 E. C. Dodds et al. in Nature 5 Feb. 248/2 In this way 4:4′-dihydroxy-αβ-diethylstilbene (diethylstilbœstrol) was obtained. 1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 272/2 Diethylstilbœstrol..confers the mating instinct on ovariectomised animals. 1944 Ann. Reg. 1943 359 Carcinoma of the prostate was successfully treated by oral administration of the synthetic œstrogen diethylstilbœstrol. 1969 Daily Tel. 18 Dec. 15/8 Heavy doses of the synthetic oestrogen diethylstilbestrol are being given to prevent pregnancy in rape victims. C2. diethyl ether n. Chemistry = ether n. 5a. ΚΠ 1864 R. Galloway 2nd Step in Chem. viii. 358 Lactate of diethyl ether. 1936 S. Glasstone Recent Adv. in Gen. Chem. ix. 418 Some ethers, e.g. , methyl ethyl, diethyl and methyl propyl ethers. 2006 J. M. Hornback Org. Chem. (Internat. Student ed.) ii. 49 Many organic compounds..are often soluble in less polar solvents such as ethanol, diethyl ether ( CH₃CH₂OCH₂CH₃), and dichloromethane (CH₂Cl₂). This entry has not yet been fully updated (first published 1895; most recently modified version published online September 2019). < n.1850
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