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 …

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

The use of Cinchona alkaloid-based chiral ammonium ylides allows for the first highly
enantioselective and broadly applicable spirocyclopropanation reactions of para-quinone …

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 …

An efficient one-pot approach for the synthesis of spiro [2.5] octa-4, 7-dien-6-ones by
employing para-quinone methides has been developed. The reaction proceeded smoothly …

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 …

Abstract Spiro [4, 5] decanes and polycyclic compounds bearing spiro [4, 5] decane systems
are important biofunctional molecules. Described are diastereoselective formal (4+ 1) …

We report a practical and scalable method for the highly diastereo-and enantio-selective
construction of 2, 3-dihydrobenzofurans bearing spiro-structures by means of cyclization …

A tandem 1, 6-addition/cyclization/vinylcyclopropane rearrangement reaction (VCPR) of
vinylogous para-quinone methides at low temperature under metal-free conditions has been …

A catalytic asymmetric decarboxylative [4+ 2] cycloaddition of vinyl benzoxazinanones with
methyleneindolinones has been established, which provided a series of chiral …