Catalytic dual 1, 1-H-abstraction/insertion for domino spirocyclizations

JK Qiu, B Jiang, YL Zhu, WJ Hao… - Journal of the …, 2015 - ACS Publications
A catalytic domino spirocyclization of 1, 7-enynes with simple cycloalkanes and cyclo-1, 3-
dicarbonyls has been established via multiple C–C bond formations from alkynyl/alkenyl …

Synthesis of bicyclo [3.1. 0] hexanes by (3+ 2) annulation of cyclopropenes with aminocyclopropanes

B Muriel, A Gagnebin, J Waser - Chemical science, 2019 - pubs.rsc.org
We report the convergent synthesis of bicyclo [3.1. 0] hexanes possessing an all-carbon
quaternary center via a (3+ 2) annulation of cyclopropenes with cyclopropylanilines. Using …

Design and synthesis of aromatics through [2+ 2+ 2] cyclotrimerization

S Kotha, K Lahiri, G Sreevani - Synlett, 2018 - thieme-connect.com
The [2+ 2+ 2] cycloaddition reaction is a useful tool to realize unusual chemical
transformations which are not achievable by traditional methods. Here, we report our work …

Diastereoselective intramolecular temporary silicon-tethered rhodium-catalyzed [4+ 2+ 2] cycloisomerization reactions: Regiospecific incorporation of substituted 1, 3 …

PA Evans, EW Baum - Journal of the American Chemical Society, 2004 - ACS Publications
Transition metal-catalyzed carbocyclization reactions represent powerful methods for the
construction of complex polycyclic systems. We have developed a regiospecific and …

ipso-Cyclization: an emerging tool for multifunctional spirocyclohexadienones

CR Reddy, SK Prajapti, K Warudikar… - Organic & …, 2017 - pubs.rsc.org
ipso-Annulation represents an attractive approach to synthesize a variety of spirocyclic
compounds having a quaternary carbon center. Furthermore, these compounds also serve …

1, 6-Conjugated addition-mediated [2+ 1] annulation: Approach to spiro [2.5] octa-4, 7-dien-6-one

Z Yuan, X Fang, X Li, J Wu, H Yao… - The Journal of Organic …, 2015 - ACS Publications
A formal 1, 6-conjugated addition-mediated [2+ 1] annulation to synthesize spiro [2.5] octa-4,
7-dien-6-one with p-quinone methides and sulfur ylides has been described. This domino …

Facile synthesis of aryl-substituted cycloarenes via bismuth (III) triflate-catalyzed cyclization of vinyl ethers

W Fan, Y Han, S Dong, G Li, X Lu, J Wu - CCS Chemistry, 2021 - chinesechemsoc.org
Cycloarenes are an essential class of polycyclic aromatic hydrocarbons with unique
electronic structure, but their synthesis is very challenging. Herein, we report a facile …

Recent Advances in Nucleophilic Lewis Base‐Catalyzed Cycloadditions for Synthesis of Spirooxindoles

QF Li, J Ma, J Meng, EQ Li - Advanced Synthesis & Catalysis, 2023 - Wiley Online Library
Spirooxindoles are privileged scaffolds in diverse bioactive natural products and
pharmaceuticals, significant achievements for the construction of these molecules have thus …

P(NMe2)3-Mediated Umpolung Spirocyclopropanation Reaction of p-Quinone Methides: Diastereoselective Synthesis of Spirocyclopropane-Cyclohexadienones

YH Deng, WD Chu, YH Shang, KY Yu, ZL Jia… - Organic …, 2020 - ACS Publications
An unprecedented umpolung spirocyclopropanation reaction of p-quinone methides and α-
keto carbonyls is described. Our umpolung strategy based on 1, 6-conjugate addition and …

Lewis acid catalyzed intramolecular [3+ 2] cross cycloadditions of cobalt-alkynylcyclopropane 1, 1-diesters with carbonyls for construction of medium-sized and …

J Zhang, S Xing, J Ren, S Jiang, Z Wang - Organic letters, 2015 - ACS Publications
A Lewis acid catalyzed intramolecular [3+ 2] cross cycloaddition of cobalt-
alkynylcyclopropane 1, 1-diesters with carbonyls has been successfully developed …