A highly selective cascade reaction that allows the direct transformation of dienallenes to
spirocyclobutenes (spiro [3.4] octenes) as single diastereoisomers has been developed. The …

A Pd-catalyzed synthesis of 3, 4, 5-trisubstituted cyclopentenes from diazabicyclic olefins
and o-iodobenzoates has been developed. The hitherto unknown cascade process involves …

Allenyl alkynones are efficiently transformed into fused bicyclic dienediones via
cyclocarbonylation reaction conditions. Mo (CO) 6/DMSO reaction conditions result in the …

A palladium-catalyzed oxidative cascade carbonylative carbocyclization of enallenols was
developed. Under mild reaction conditions, a range of cis-fused [5, 5] bicyclic γ-lactones and …

An unprecedented organocatalyzed [3+ 2] annulation of cyclopropenones and β-ketoesters
has been developed. This reaction provides a direct approach to highly substituted …

A novel palladium-catalyzed oxidative cyclopropanation of enamides and norbornenes has
been developed. The reaction proceeded through palladium-catalyzed vinyl C–H bond …

A one-pot, multistep reaction cascade to cyclopentenes from α, β-unsaturated ketones and
propargylated carbon acids through a combination of organocatalysis and transition metal …

An efficient stereoselective route for the synthesis of cyclopentene fused 2-pyrrolines has
been established via a Pd-catalyzed C–H activation/oxidative coupling of aryl enamides with …

Organoaluminum‐mediated double interrupted Nazarov cyclization to access bicyclo [3.1. 0]
hexanols via nucleophilic methyl attack followed by Simmons–Smith‐type electrophilic …

Conspectus Tetracyclic diterpenoids (C20) mainly refer to the plant terpenoids bearing
biogenetically related carbon skeletons derived from copalyl diphosphates (ent-CPP and …