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单词 spiro-compound
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spiro-compound
2. Chemistry. Formative element used in the names of organic compounds whose molecular structure includes two rings with a single atom (usually of carbon or nitrogen) common to both. Also in combinations or as quasi-adj., as spiro-compound. [Introduced in German (A. Baeyer 1900, in Berichte der Deutsch. Chem. Ges. 33 3771).]
ΚΠ
1908 Chem. Abstr. 2 75 (heading) Spirocyclane.
1908 Chem. Abstr. 2 75 The term ‘spiro’ is applied by the author to systems of two cycloids, having only one carbon atom in common.
1909 Jrnl. Chem. Soc. 96 i. 652 The product, decomposed by cold water, yields the spirocyclane derivative.
1915 Jrnl. Chem. Soc. 107 ii. 1080 (heading) The formation and stability of spiro-compounds.
1932 Proc. Royal Soc. 1931–2 A. 134 359 The anhydrous crystals of racemic spiro-dihydantoin have a density of 1·94.
1960 Jrnl. Amer. Chem. Soc. 82 5560/1 According to the number of spiro atoms present, the compounds are distinguished as monospiro, dispiro, trispiro compounds etc.
1976 A. L. Ternay Contemp. Org. Chem. vii. 185 A spiro compound results when two rings share one atom.
1978 Nature 5 Jan. 44/2 During irradiation of spiropyrans, in non-polar solvents dimer and charge-transfer complexes are formed.
1978 Further Perspectives Org. Chem. (CIBA) 40 Evidence for the possible spiro intermediate would give enormous support and we are seeking it.
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