Asymmetric organocatalysis mediated by α, α-L-diaryl prolinols: recent advances

S Meninno, A Lattanzi - Chemical Communications, 2013 - pubs.rsc.org
This feature article illustrates progress in asymmetric organocatalysis achieved by using
readily available α, α-L-diaryl prolinols from 2009 up to middle 2012. This class of …

Asymmetric cyclopropanation reactions

G Bartoli, G Bencivenni, R Dalpozzo - Synthesis, 2014 - thieme-connect.com
Both physical and organic chemists are interested in the cyclopropane ring, the former
owing to the strain inherent to the small ring structure, the latter prompted by the importance …

Nickel (II)-catalyzed enantioselective cyclopropanation of 3-alkenyl-oxindoles with phenyliodonium ylide via free carbene

J Guo, Y Liu, X Li, X Liu, L Lin, X Feng - Chemical Science, 2016 - pubs.rsc.org
A chiral Lewis acid-promoted enantioselective cyclopropanation using phenyliodonium ylide
as the carbene precursor was developed. A variety of spirocyclopropane-oxindoles with …

Enantioselective Synthesis of Bispiro [indanedione-oxindole-cyclopropane] s through Organocatalytic [2+ 1] Cycloaddition

ZF Hao, SJ Zhu, YJ Hao, WH Zhang… - The Journal of …, 2022 - ACS Publications
A series of compounds featuring a novel bispiro [indanedione-oxindole-cyclopropane]
moiety have been synthesized through a squaramide-catalyzed [2+ 1] cycloaddition …

A review on 2-arylidene-1, 3-indanediones: preparation and applications to the synthesis of diverse spirocyclic compounds

D Chitteti, P Padmaja, VS Rani, PN Reddy - Monatshefte für Chemie …, 2024 - Springer
Abstract Arylidene-1, 3-indanediones are readily available 1, 3-dipolarophile and
dienophiles that have been frequently used in numerous synthetic processes to produce a …

An efficient organocatalytic enantioselective synthesis of spironitrocyclopropanes

U Das, YL Tsai, W Lin - Organic & Biomolecular Chemistry, 2013 - pubs.rsc.org
An organocatalytic asymmetric synthesis of spironitrocyclopropanes has been demonstrated
starting from 2-arylidene-1, 3-indandiones and bromonitroalkanes catalyzed by a cinchona …

Organocatalytic synthesis of substituted spirocyclohexane carbaldehydes via [4+ 2] annulation strategy between 2-arylideneindane-1, 3-diones and glutaraldehyde

S Anwar, SM Li, K Chen - Organic letters, 2014 - ACS Publications
An organocatalytic domino reaction between 2-arylideneindane-1, 3-diones and
glutaraldehyde has been devised that gives functionalized spirocyclohexane carbaldehydes …

N-Iodosuccinimide-Initiated Spirocyclopropanation of Styrenes with 1,3-Dicarbonyl Compound for the Synthesis of Spirocyclopropanes

P Qian, B Du, R Song, X Wu, H Mei… - The Journal of Organic …, 2016 - ACS Publications
Herein is reported an N-iodosuccinimide-initiated spirocyclopropanation reaction of styrenes
with 1, 3-dicarbonyl compounds in the presence of white LED light. The reaction proceeds …

Electrocatalysis in MIRC reaction strategy: facile stereoselective approach to medicinally relevant spirocyclopropylbarbiturates from barbituric acids and activated …

EO Dorofeeva, MN Elinson, AN Vereshchagin… - RSC …, 2012 - pubs.rsc.org
The combined electrolysis of barbituric acids and benzylidenemalononitriles or
benzylidenecyanoacetates in methanol in an undivided cell in the presence of sodium …

Catalytic asymmetric Tamura cycloaddition of homophthalic anhydrides with 2-arylidene-1, 3-diones

H Xu, F Sha, Q Li, XY Wu - Organic & Biomolecular Chemistry, 2018 - pubs.rsc.org
An organocatalytic enantioselective Tamura cycloaddition between homophthalic
anhydrides and 2-arylidene-1, 3-indanediones has been developed. With 2 mol% of …