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Relative diastereoselection is an issue that is confrtHited most frequently in the IMDA reactions of trienes with one or more stereocenters on the chain connecting the diene and dienophile. As a general rule, trienes with saturated amnecting chains cyclize via transition states with chair-like conformations, while boat-like transition states are frequently encountered with the 1,7,9-decatrienones as well as with... [Pg.532]

See other pages where Trienes saturated connecting chains is mentioned: [Pg.513] [Pg.533] [Pg.513] [Pg.533] [Pg.214]