The Electronic and Steric Effects in Heterolytic Intramolecular Cyclisation Reactions

Data concerning the influence of the electronic and steric effects of substituents as well as the structure of the connecting units on the rate and equilibrium constants for cyclisation reactions, occurring as intramolecular nucleophilic addition to a trigonal carbon atom, are examined. The general characteristics permitting the prediction of the ease of ring closure and the stability of the heterocycles are specified.
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