A type II intramolecular oxidopyrylium‐mediated [5+ 2] cycloaddition reaction allows the
efficient and diastereoselective formation of various highly functionalized and synthetically …

Build a bridge: The first catalytic intramolecular [3+ 2] cycloaddition of monodonor-
monoacceptor cyclopropanes (see scheme) provides a general and efficient strategy for …

Abstract The first dearomative indole [5+ 2] cycloaddition reaction with an oxidopyrylium
ylide resulted in efficient and diastereoselective construction of some highly functionalized …

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

Conspectus Natural products containing bridged ring systems are widely identified and
show significant biological activity. The development of efficient synthesis reactions and …

Benzopyrylium ylides generated in situ from 1‐acetoxyisochroman‐4‐ones reacted with α, β‐
unsaturated aldehydes in the presence of a bifunctional secondary‐amine/squaramide …

A study on the synthetic utility of [6+ 3] cycloaddition of pentafulvenes with 3-oxidopyrylium
betaines is described. 5–8 Fused oxa-bridged cyclooctanoids, the products of the above …

Developing efficient and general strategies to construct skeletally complex and diverse
polycyclic skeletons is important for both synthesis of natural products and chemical biology …

[5+ 2] Cycloaddition reactions have attracted increasing attention from the chemistry
community owing to their utility in the field of natural product synthesis. Recently, a number …

Aiming to develop efficient and general strategies for construction of complex and diverse
polycyclic skeletons, we have successfully developed [4+ 3] IMPC (intramolecular parallel …