英语词汇“diels–alder reaction”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

Used attributively with reference to a synthetic method involving the addition of a conjugated diene to a compound with a double or triple bond so as to form a six-membered ring; esp. in Diels–Alder reaction. Cf. diene synthesis n. at diene n. Compounds.

ΚΠ

1932 Jrnl. Chem. Soc. 2325 We now describe a new method [sc. for estimating isoprene yields], based on the Diels-Alder reaction with maleic anhydride.

1957 R. H. Thomson Naturally Occurring Quinones ii. 47 The position of the hydroxyl groups was inferred from the easy formation of a bis-adduct by Diels-Alder addition of cyclo pentadiene.

1977 J. March Adv. Org. Chem. (ed. 2) xv. 762 Thus, butadiene and isoprene..gave all nine possible Diels–Alder adducts, as well as eight-membered rings and trimers.

1981 P. Sykes Guidebk. to Mechanism in Org. Chem. (ed. 5) xii. 338 Like other cycloadditions, Diels-Alder reactions are potentially reversible and in some cases the reverse process, the retro Diels-Alder reaction, can be made preparatively useful.

2006 J. M. Hornback Org. Chem. (Internat. Student ed.) xxii. 980 Cyclopentadiene [is] so reactive as a diene in the Diels-Alder reaction that it dimerizes at room temperature.

单词	diels–alder reaction
释义	> as lemmas Diels–Alder reaction. Used attributively with reference to a synthetic method involving the addition of a conjugated diene to a compound with a double or triple bond so as to form a six-membered ring; esp. in Diels–Alder reaction. Cf. diene synthesis n. at diene n. Compounds. ΚΠ 1932 Jrnl. Chem. Soc. 2325 We now describe a new method [sc. for estimating isoprene yields], based on the Diels-Alder reaction with maleic anhydride. 1957 R. H. Thomson Naturally Occurring Quinones ii. 47 The position of the hydroxyl groups was inferred from the easy formation of a bis-adduct by Diels-Alder addition of cyclo pentadiene. 1977 J. March Adv. Org. Chem. (ed. 2) xv. 762 Thus, butadiene and isoprene..gave all nine possible Diels–Alder adducts, as well as eight-membered rings and trimers. 1981 P. Sykes Guidebk. to Mechanism in Org. Chem. (ed. 5) xii. 338 Like other cycloadditions, Diels-Alder reactions are potentially reversible and in some cases the reverse process, the retro Diels-Alder reaction, can be made preparatively useful. 2006 J. M. Hornback Org. Chem. (Internat. Student ed.) xxii. 980 Cyclopentadiene [is] so reactive as a diene in the Diels-Alder reaction that it dimerizes at room temperature. extracted from Diels–Aldern. < as lemmas
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> as lemmas