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

A phosphine-catalyzed [3+ 2] annulation of isatin-derived α, β-unsaturated ketones with
alkynoates for the synthesis of cyclopentene spiro-oxindole skeletons has been developed …

Lewis acid catalyzed highly efficient [3+ 2] annulation of spirocyclic Donor–Acceptor
cyclopropanes (DACs) with exo-heterocyclic olefins is reported to furnish various …

Spirocyclopropyl oxindoles are widely present in natural products and bioactive molecules.
In addition, they play a significant role as a type of donor–acceptor (DA) cyclopropanes in …

An efficient and straightforward Lewis-acid-mediated stereoselective (4+ 3)-cyclization of
indole-substituted alkylidene malonates and donor–acceptor cyclopropanes has been …

A PPh3 mediated reductive annulation reaction between isatins and 4, 4-dicyano-2-
methylenebut-3-enoates was developed. The reaction provided an alternative method for …

Spirocyclopropane oxindoles were synthesized in good to excellent yield and
diastereoselectivity employing a Kukhtin–Ramirez reaction between readily accessible E …

A unique, rhodium-catalyzed reaction of cyclopropene carboxylic acids with isatins has been
developed, which takes place through a trapping process of transient cyclic carboxylic …

Efficient cyclopropanation of α, β-unsaturated ketones using α-ketoesters or isatin
derivatives is reported. The cyclopropanation reaction occurs via a cascade transformation …

A metal-free directed C2, C3-cyclopropanation of suitably substituted indoles with α-diazo
esters has been accomplished for the diastereoselective synthesis of cyclopropane-fused …