suprafacial

suprafacial

[¦sü·prə′fā·shəl]
(organic chemistry)
The stereochemistry when, simultaneously, two sigma bonds are formed or broken on the same face of the component pi systems, such as in a cycloaddition reaction.
References in periodicals archive ?
The Rhodium intermediates are believed to undergo suprafacial 1,3-isomerisation between two different allyl species and if reductive elimination is rate-determining this would provide a mechanism for enantioselection.
Acceso suboccipital' linea media transventricular; zona de ingreso: triangulo suprafacial. Traqueotomia y gastrostomia transitorias.
Zona de ingreso: triangulo suprafacial izquierdo (zona de mayor deformidad).