Access to Enantiomerically Pure P-Chiral 1-Phosphanorbornane Silyl Ethers

K Ramazanova, S Chakrabortty, F Kallmeier… - Molecules, 2023 - mdpi.com
Sulfur-protected enantiopure P-chiral 1-phosphanorbornane silyl ethers 5a, b are obtained
in high yields via the reaction of the hydroxy group of P-chiral 1-phosphanorbornane alcohol …

2H‐Phosphindole‐Enabled Dearomatization and [4+2] Cycloaddition of (Hetero)Arenes

H Luo, J Wang, R Tian, Z Duan - Chemistry–A European …, 2023 - Wiley Online Library
The heavier main group multiple bonds offer an effective tool for small molecule activation.
Transient 2H‐phosphinidole working as a reactive phosphadiene system undergoes …

Facile Synthesis of Enantiomerically Pure P‐Chiral 1‐Alkoxy‐2,3‐dihydrophospholes via Nucleophilic P‐N Bond Cleavage of a 1‐Phospha‐2‐azanorbornene

K Ramazanova, P Lönnecke… - Chemistry–A European …, 2023 - Wiley Online Library
The reactive P− N bond in a racemic mixture of endo‐1‐phospha‐2‐azanorbornene
(PAN)(RP/SP)‐endo‐1 is readily cleaved with enantiomerically pure lithium alkoxides …

Synthesis of P-stereogenic 1-phosphanorbornane-derived phosphine–phosphite ligands and application in asymmetric catalysis

K Ramazanova, S Chakrabortty, BH Müller… - RSC …, 2023 - pubs.rsc.org
A convenient synthesis of enantiopure mixed donor phosphine–phosphite ligands has been
developed incorporating P-stereogenic phosphanorbornane and axially chiral bisnaphthols …

Hetero-Diels–Alder reactions of 2 H-phospholes with allenes: Synthesis and functionalization of 6-methylene-1-phosphanorbornenes

K Zhang, Q Zhang, D Wei, R Tian… - Organic Chemistry …, 2021 - pubs.rsc.org
The phospha-Diels–Alder reaction between 2H-phospholes and arylallenes affords 6-
methylene-1-phosphanorbornenes in high yields with excellent regioselectivity. This Diels …

Ring-Opening Reaction of 1-Phospha-2-Azanorbornenes via PN Bond Cleavage and Reversibility Studies

K Ramazanova, AK Müller, P Lönnecke, O Hollóczki… - Molecules, 2023 - mdpi.com
The reactive PN bond in 1-phospha-2-azanorbornenes is readily cleaved by simple alcohols
to afford P-chiral 2, 3-dihydrophosphole derivatives as a racemic mixture. The isolation of …

P-Chiral 1, 7-diphosphanorbornenes: from asymmetric phospha-Diels–Alder reactions towards applications in asymmetric catalysis

AA Zagidullin, ES Oshchepkova, IV Chuchelkin… - Dalton …, 2019 - pubs.rsc.org
A straightforward synthesis of P-chiral polycyclic phosphines by an asymmetric Diels–Alder
reaction of 1-alkyl-1, 2-diphospholes and (5R)-(L-menthyloxy)-2 (5H)-furanone (MOxF) is …

Access to 1‐Phospha‐2‐azanorbornenes by Phospha‐aza‐Diels–Alder Reactions

P Wonneberger, N König, FB Kraft… - Angewandte Chemie …, 2019 - Wiley Online Library
The unprecedented phospha‐aza‐Diels–Alder reaction between an activated electron‐poor
imine and 2H‐phospholes yields 1‐phospha‐2‐azanorbornenes in a highly chemoselective …

Hetero Diels–Alder reactions of masked dienes containing heavy group 15 elements

M Kořenková, V Kremláček, M Hejda… - … A European Journal, 2020 - Wiley Online Library
Abstract Treatment of N, C, N‐chelated organopnictogen (I) compounds ArE (1–3)(Ar= 2, 6‐
(RN= CH) 2C6H3, E/R= As/Dmp (1), Sb/tBu (2), and Bi/tBu (3), where Dmp= 2, 6‐Me2C6H3) …

Phosphirane-Enabled Synthesis of Aromatic 1H-1,2-Azaphospholes and Phosphinines

C Xu, Z Dai, S Kang, R Tian, Z Duan - Organic Letters, 2024 - ACS Publications
Aromatic heteroarenes are essential components of numerous valuable molecules. Herein
we present a simple and effective route to access aromatic 1 H-1, 2-azaphospholes and …