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 …

Recent Advances in Squaramide‐Catalyzed Asymmetric Mannich Reactions

XQ Hou, DM Du - Advanced Synthesis & Catalysis, 2020 - Wiley Online Library
Bifunctional squaramides as a branch of organo‐catalysts showed powerful strategies in the
art of asymmetric synthesis, and they have been proved to be highly efficient and versatile …

Organocatalytic Asymmetric [3 + 2] Cycloaddition of N-2,2,2-Trifluoroethylisatin Ketimines with β-Trifluoromethyl Electron-Deficient Alkenes: Access to Vicinally Bis …

Y You, WY Lu, ZH Wang, YZ Chen, XY Xu… - Organic …, 2018 - ACS Publications
N-2, 2, 2-Trifluoroethylisatin ketimines with β-trifluoromethyl enones, 3-trifluoroethylidene
oxindole, and 3-trifluoroethylidene benzofuranone can undergo asymmetric [3+ 2] …

Chiral thioureas—preparation and significance in asymmetric synthesis and medicinal chemistry

F Steppeler, D Iwan, E Wojaczyńska, J Wojaczyński - Molecules, 2020 - mdpi.com
For almost 20 years, thioureas have been experiencing a renaissance of interest with the
emerged development of asymmetric organocatalysts. Due to their relatively high acidity and …

Strategies for the catalytic enantioselective synthesis of α-trifluoromethyl amines

CI Onyeagusi, SJ Malcolmson - ACS catalysis, 2020 - ACS Publications
The exploitation of the α-trifluoromethylamino group as an amide surrogate in
peptidomimetics and drug candidates has been on the rise. In a large number of these …

Organocatalytic asymmetric synthesis of cyclic compounds bearing a trifluoromethylated stereogenic center: recent developments

XH He, YL Ji, C Peng, B Han - Advanced Synthesis & Catalysis, 2019 - Wiley Online Library
The broad prospects of trifluoromethylated compounds in materials science, agricultural
chemistry, and pharmaceutical chemistry have stimulated the rapid development of …

Stereoselective domino reactions in the synthesis of spiro compounds

R Westphal, E Venturini Filho, F Medici, M Benaglia… - …, 2022 - thieme-connect.com
This review summarizes the latest developments in asymmetric domino reactions, with the
emphasis on the preparation of spiro compounds. Discussions on the stereoselectivity of the …

Stereoselective Synthesis of CF3‐Containing Spirooxindoles via 1,3‐Dipolar Cycloaddition by Dipeptide‐Based Phosphonium Salt Catalysis

X Liu, D Lu, JH Wu, JP Tan, C Jiang… - … Synthesis & Catalysis, 2020 - Wiley Online Library
Reported here is an alternative method for asymmetric synthesis of the CF3‐substituted 3,
2′‐pyrrolidinyl spirooxindoles via 1, 3‐dipolar cycloaddition by employing dipeptide‐based …

Asymmetric construction of bispiro [oxindole-pyrrolidine-rhodanine] s via squaramide-catalyzed domino Michael/Mannich [3+ 2] cycloaddition of rhodanine derivatives …

YX Song, DM Du - The Journal of Organic Chemistry, 2018 - ACS Publications
Squaramide-catalyzed asymmetric domino Michael/Mannich [3+ 2] cycloaddition reaction
between rhodanine derivatives and N-(2, 2, 2-trifluoroethyl) isatin ketimines has been …

Organocatalytic Asymmetric Synthesis of 2,3-Dihydro-4H-imidazol-4-ones via Cyclocondensation of N-Silyl Iminoesters

K Ogura, S Ando, T Takehara, T Suzuki… - ACS …, 2024 - ACS Publications
Chiral 2, 3-dihydro-4 H-imidazol-4-ones are key motifs in both synthetic and biological
chemistry. However, their accessibility is classically limited to optical resolution of …