Stereoselective synthesis and applications of spirocyclic oxindoles

AJ Boddy, JA Bull - Organic Chemistry Frontiers, 2021 - pubs.rsc.org
The development of novel synthetic strategies to form new chemical entities in a
stereoselective manner is an ongoing significant objective in organic and medicinal …

Catalytic synthesis of 3-aminooxindoles via addition to isatin imine: an update

J Kaur, SS Chimni - Organic & Biomolecular Chemistry, 2018 - pubs.rsc.org
3-Substituted-3-aminooxindoles have attracted the attention of organic chemists since they
have a common core structural motif found in many natural products and biologically active …

Copper-Catalyzed Borylative Aromatization of p-Quinone Methides: Enantioselective Synthesis of Dibenzylic Boronates

C Jarava-Barrera, A Parra, A López, F Cruz-Acosta… - ACS …, 2016 - ACS Publications
In this report, we establish that DM-Segphos copper (I) complexes are efficient catalysts for
the enantioselective borylation of para-quinone methides. This method provides …

Phosphine‐mediated Highly Enantioselective Spirocyclization with Ketimines as Substrates

X Han, WL Chan, W Yao, Y Wang, Y Lu - Angewandte Chemie, 2016 - Wiley Online Library
Phosphine‐catalyzed enantioselective annulation reactions involving ketimines are a
daunting synthetic challenge owing to the intrinsic low reactivity of ketimine substrates. A …

An organocatalytic asymmetric Friedel–Crafts addition/fluorination sequence: construction of oxindole–pyrazolone conjugates bearing vicinal tetrasubstituted …

X Bao, B Wang, L Cui, G Zhu, Y He, J Qu, Y Song - Organic letters, 2015 - ACS Publications
A highly efficient and practical one-pot sequential process, consisting of an organocatalytic
enantioselective Friedel–Crafts-type addition of 4-nonsubstituted pyrazolones to isatin …

Chiral selenide-catalyzed, highly regio-and enantioselective intermolecular thioarylation of alkenes with phenols

Y Zhang, Y Liang, X Zhao - ACS Catalysis, 2021 - ACS Publications
Enantioselective electrophilic three-component thioarylation of alkenes by chiral selenide
catalysis with free phenols as arylating sources is disclosed. A variety of chiral phenols were …

Enantioselective Rhodium‐Catalyzed Addition of Arylboroxines to N‐Unprotected Ketimines: Efficient Synthesis of Cipargamin

J Zhu, L Huang, W Dong, N Li, X Yu… - Angewandte …, 2019 - Wiley Online Library
Highly enantioselective rhodium‐catalyzed addition of arylboroxines to N‐unprotected
ketimines is realized for the first time by employing chiral BIBOP‐type ligands with a Rh …

Organocatalytic asymmetric synthesis of spiro-oxindole piperidine derivatives that reduce cancer cell proliferation by inhibiting MDM2–p53 interaction

MC Yang, C Peng, H Huang, L Yang, XH He… - Organic …, 2017 - ACS Publications
Asymmetric synthesis of pharmacologically interesting piperidine-fused spiro-oxindole
derivatives has been achieved via an organocatalytic Michael/aza-Henry/hemiaminalization …

Squaramide‐Catalyzed Asymmetric aza‐Friedel–Crafts/N, O‐Acetalization Domino Reactions Between 2‐Naphthols and Pyrazolinone Ketimines

U Kaya, P Chauhan, S Mahajan, K Deckers… - Angewandte …, 2017 - Wiley Online Library
N‐Boc ketimines derived from pyrazolin‐5‐ones were explored to develop an
unprecedented domino aza‐Friedel–Crafts/N, O‐acetalization reaction with 2‐naphthols …

Chemo-, regio-and enantioselective dearomative (3+ 2) reaction of non-functionalized 1-naphthols

GJ Mei, Y Luo, WL Koay, R Li, Y Lan, Y Lu - Chem Catalysis, 2022 - cell.com
The catalytic asymmetric dearomatization reaction of non-functionalized arenes poses a
long-standing synthetic challenge to organic chemists because of the relative ease of …