188303-62-0Relevant articles and documents
2-Alkenyl dioxolanylium cations, new reactive dienophiles in low temperature asymmetric Diels-Alder reactions
Haudrechy, Arnaud,Picoul, Willy,Langlois, Yves
, p. 139 - 148 (2007/10/03)
Chiral orthoesters 14-22 were prepared by an exchange reaction with orthoester 13. These compounds, after treatment with trimethylsilyltriflate or tin(IV) chloride, gave rise to vinyl dioxolanylium cations which proved to be very reactive dienophils in various Diels-Alder reactions.