An unprecedented umpolung spirocyclopropanation reaction of p-quinone methides and α-
keto carbonyls is described. Our umpolung strategy based on 1, 6-conjugate addition and …

A novel base-mediated tandem spirocyclopropanation/rearrangement reaction of vinyl p-
quinone methides (p-VQMs) with sulfonium salts is described. The unprecedented reactivity …

A novel DBU-mediated stereoselective spirocyclopropanation of para-quinone methides
with sulfonium salts has been developed on the basis of the mode involving a 1, 6-conjugate …

AP (NMe2) 3-mediated reductive intramolecular cyclopropanation is developed for the first
time, which provides facile access to a wide variety of cyclopropane-fused heterocycles …

Abstract An unusual formal [1+ 4] annulation of α‐dicarbonyl compounds with 1, 1‐dicyano‐
1, 3‐dienes has been realized, leading to facile syntheses of cyclopentenimines and …

A variety of chroman spiroketals are synthesized via inverse-demand [4+ 2] cycloaddition of
enol ethers and ortho-quinone methides (o-QMs). Low temperature o-QM generation in situ …

AP (NMe2) 3-mediated reductive cyclopropanation reaction of α-keto esters or amides with
isatin-derived alkenes has been developed, providing efficient and diastereoselective …

The first total syntheses of (−)-penicipyrone and (−)-tenuipyrone were accomplished
enantioselectively in 12 steps with an 11% yield and 6 steps with a 28% yield from the …

Here, we present an unprecedented formal [3+ 2] cycloaddition of para-quinone methides
with vinyl epoxides/cyclopropanes to deliver a wide range of spiro [4.5] decanes in high …

We report the convergent synthesis of bicyclo [3.1. 0] hexanes possessing an all-carbon
quaternary center via a (3+ 2) annulation of cyclopropenes with cyclopropylanilines. Using …