Scheme 37 Mootoo et al.’s synthesis of spiroacetals from allylic alcohols [82–84]
Scheme 38 Transition-metal catalyzed hydroalkoxylation of internal alkynes in the synthesis of
spiroacetals
Scheme 39 Utimoto’s Pd-catalyzed hydroalkoxylation of internal alkynes [85]
Synthesis of 5,6- and 6,6-Spirocyclic Compounds
217
Scheme 38 Transition-metal catalyzed hydroalkoxylation of internal alkynes in the synthesis of
spiroacetals
Scheme 39 Utimoto’s Pd-catalyzed hydroalkoxylation of internal alkynes [85]
Synthesis of 5,6- and 6,6-Spirocyclic Compounds
217