sentences:  The term “Trans-diaxial addition” describes the mechanism of the addition, however the products are likely to equilibrate by ring flip to the lower energy conformer, placing the new substituents in the equatorial position.Epoxidation of a substituted cyclohexene affords a product where the R group resides in the pseudo-equatorial position.Nucleophilic opening of this epoxide can occur by attack at either the 1 or 2 position.