单词	cycloaddition
释义	cycloaddition /ˌsʌɪkləʊəˈdɪʃ(ə)n / noun Chemistry An addition reaction in which a cyclic molecule is formed.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. 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.
随便看	unrevealed unrevealing unrevenged unrevengeful unrevengefulness unreverence unreverenced unreverent unreverential unreversable unreversed unreviewed unreviled unrevisable unrevised unrevivable unrevived unrevocable unrevocably unrevoked unrevolutionized unrevolved unrevolving unrewardable unrewarded

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