Definition of cycloaddition in English:

cycloaddition

nounˌsʌɪkləʊəˈdɪʃ(ə)nˌsīklōəˈdiSHən

Chemistry

An addition reaction in which a cyclic molecule is formed.
〔化〕环加成
Example sentencesExamples
- These data confirm that cycloaddition occurs between the 8,9-double bond of HFQ and the 5,6-double bond of thymine.
- Interplanar angles of 40.5 and 39 have been found in the 5-ethoxypsoralen-thymine and 5-butoxypsoralen-thymine photoproducts, respectively, where the cycloaddition occurs at the pyrone ring.
- The photochemical reaction pathways of the different cycloadditions were explored on the basis of TD-DFT calculations using the Gaussian 98 implementation of the method developed by Scuseria and co-workers.
- Nitrone cycloaddition and retro-aldol reactions have also been applied to the total synthesis of morphine.

Definition of cycloaddition in US English:

cycloaddition

nounˌsīklōəˈdiSHən

Chemistry

An addition reaction in which a cyclic molecule is formed.
〔化〕环加成
Example sentencesExamples
- Interplanar angles of 40.5 and 39 have been found in the 5-ethoxypsoralen-thymine and 5-butoxypsoralen-thymine photoproducts, respectively, where the cycloaddition occurs at the pyrone ring.
- Nitrone cycloaddition and retro-aldol reactions have also been applied to the total synthesis of morphine.
- The photochemical reaction pathways of the different cycloadditions were explored on the basis of TD-DFT calculations using the Gaussian 98 implementation of the method developed by Scuseria and co-workers.
- These data confirm that cycloaddition occurs between the 8,9-double bond of HFQ and the 5,6-double bond of thymine.

词汇	cycloaddition
释义	Definition of cycloaddition in English: cycloaddition nounˌsʌɪkləʊəˈdɪʃ(ə)nˌsīklōəˈdiSHən Chemistry An addition reaction in which a cyclic molecule is formed. 〔化〕环加成 Example sentencesExamples These data confirm that cycloaddition occurs between the 8,9-double bond of HFQ and the 5,6-double bond of thymine. Interplanar angles of 40.5 and 39 have been found in the 5-ethoxypsoralen-thymine and 5-butoxypsoralen-thymine photoproducts, respectively, where the cycloaddition occurs at the pyrone ring. The photochemical reaction pathways of the different cycloadditions were explored on the basis of TD-DFT calculations using the Gaussian 98 implementation of the method developed by Scuseria and co-workers. Nitrone cycloaddition and retro-aldol reactions have also been applied to the total synthesis of morphine. Definition of cycloaddition in US English: cycloaddition nounˌsīklōəˈdiSHən Chemistry An addition reaction in which a cyclic molecule is formed. 〔化〕环加成 Example sentencesExamples Interplanar angles of 40.5 and 39 have been found in the 5-ethoxypsoralen-thymine and 5-butoxypsoralen-thymine photoproducts, respectively, where the cycloaddition occurs at the pyrone ring. Nitrone cycloaddition and retro-aldol reactions have also been applied to the total synthesis of morphine. The photochemical reaction pathways of the different cycloadditions were explored on the basis of TD-DFT calculations using the Gaussian 98 implementation of the method developed by Scuseria and co-workers. These data confirm that cycloaddition occurs between the 8,9-double bond of HFQ and the 5,6-double bond of thymine.
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