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

aldoketene n.

Brit.

/ˌaldə(ʊ)ˈkiːtiːn/

U.S.

/ˌældoʊˈkiˌtin/

(also aldoketen) any ketene of the form RHC=C=O, where R is an alkyl group; cf. ketoketen n. at keto- comb. form 1a.

ΚΠ

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

1942 R. C. Fuson & H. R. Snyder Org. Chem. xxi. 296 Ketenes fall into two classes, aldoketenes and ketoketenes.

1962 Jrnl. Org. Chem. 27 3743/2 This reaction apparently involves a concerted elimination of an aldoketene from the ethoxyacetylene.

1995 D. C. Harrowven & S. T. Dennison in A. R. Katritzky et al. Comprehensive Org. Functional Group Transformations III. xvi. 540 Provided there is a hydrogen atom situated on the β-carbon of the ether, these materials readily suffer elimination of an alkene to provide the corresponding ‘aldoketene’.

单词	aldoketene
释义	> as lemmas aldoketene aldoketene n. Brit. /ˌaldə(ʊ)ˈkiːtiːn/ , U.S. /ˌældoʊˈkiˌtin/ (also aldoketen) any ketene of the form RHC=C=O, where R is an alkyl group; cf. ketoketen n. at keto- comb. form 1a. ΚΠ 1908 Jrnl. Chem. Soc. 94 i. 318 The first groups are termed aldo-ketens and the second, keto-ketens. 1942 R. C. Fuson & H. R. Snyder Org. Chem. xxi. 296 Ketenes fall into two classes, aldoketenes and ketoketenes. 1962 Jrnl. Org. Chem. 27 3743/2 This reaction apparently involves a concerted elimination of an aldoketene from the ethoxyacetylene. 1995 D. C. Harrowven & S. T. Dennison in A. R. Katritzky et al. Comprehensive Org. Functional Group Transformations III. xvi. 540 Provided there is a hydrogen atom situated on the β-carbon of the ether, these materials readily suffer elimination of an alkene to provide the corresponding ‘aldoketene’. extracted from aldo-comb. form < as lemmas
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> as lemmas