英语词汇“ketoketen”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

> as lemmas

ketoketen

ketoketen n.

Brit.

/ˌkiːtə(ʊ)ˈkiːtn/

/ˌkiːtə(ʊ)ˈkiːtiːn/

U.S.

/ˌkidoʊˈkitn/

/ˌkidoʊˈkiˌtin/

(also ketoˈketene) [ < German ketoketen (Staudinger & Klever 1908, in Berichte der Deutsch. Chem. Ges. 41 909)] any ketene of the type RR′C:C:O.

ΚΠ

1908 Jrnl. Chem. Soc. 94 i. 318 The first groups are termed aldo-ketens and the second, keto-ketens.

1937 F. C. Whitmore Org. Chem. 281 The ketoketenes are colored, are easily auto-oxidized to give peroxides, and form addition cpds. with cyclic tertiary amines.

1951 I. L. Finar Org. Chem. I. xii. 230 If the compound is of the type R·CH:C:O, it is known as an aldoketen; and if R₂C:C:O, then a ketoketen.

extracted from keto-comb. form

as lemmas

单词	ketoketen
释义	> as lemmas ketoketen ketoketen n. Brit. /ˌkiːtə(ʊ)ˈkiːtn/ , /ˌkiːtə(ʊ)ˈkiːtiːn/ , U.S. /ˌkidoʊˈkitn/ , /ˌkidoʊˈkiˌtin/ (also ketoˈketene) [ < German ketoketen (Staudinger & Klever 1908, in Berichte der Deutsch. Chem. Ges. 41 909)] any ketene of the type RR′C:C:O. ΚΠ 1908 Jrnl. Chem. Soc. 94 i. 318 The first groups are termed aldo-ketens and the second, keto-ketens. 1937 F. C. Whitmore Org. Chem. 281 The ketoketenes are colored, are easily auto-oxidized to give peroxides, and form addition cpds. with cyclic tertiary amines. 1951 I. L. Finar Org. Chem. I. xii. 230 If the compound is of the type R·CH:C:O, it is known as an aldoketen; and if R₂C:C:O, then a ketoketen. extracted from keto-comb. form < as lemmas
随便看	hold in chertee hold in contempt hold in contempt of court hold in demesne hold in esteem, contempt, memory, etc hold in estimation hold in etc reputation hold in etc respect hold in etc reverence hold in fable hold in farm hold in fee hold in feu-farm hold in feufarm hold in great reputation hold in great reverence hold in great suspense hold in hals hold in hand hold in high respect hold in honour hold in in early use on worship hold in mind hold in no reputation hold in one's purse