Combination iminium, enamine and copper (I) cascade catalysis: a carboannulation for the synthesis of cyclopentenes

T Yang, A Ferrali, L Campbell, DJ Dixon - Chemical communications, 2008 - pubs.rsc.org
A one-pot, multistep reaction cascade to cyclopentenes from α, β-unsaturated ketones and
propargylated carbon acids through a combination of organocatalysis and transition metal …

DABCO-mediated isocyanide-based multicomponent reaction: synthesis of highly substituted cyclopentenes

LR Wen, MC Lan, WK Yuan, M Li - Organic & Biomolecular Chemistry, 2014 - pubs.rsc.org
DABCO-mediated isocyanide-based multicomponent reaction: synthesis of highly
substituted cyclopentenes - Organic & Biomolecular Chemistry (RSC Publishing) DOI:10.1039/C4OB00012A …

Direct access to trifluoromethyl-substituted carbamates from carbon dioxide via copper-catalyzed cascade cyclization of enynes

L Wang, C Qi, R Cheng, H Liu, W Xiong, H Jiang - Organic letters, 2019 - ACS Publications
A copper-catalyzed cascade cyclization of enynes with Togni's reagent, carbon dioxide, and
amines has been successfully developed. The reaction provides a direct and efficient route …

Recent Advances in the Catalytic Synthesis of the Cyclopentene Core

R Miguélez, P Barrio, JM González - The Chemical Record, 2023 - Wiley Online Library
Five‐membered carbocycles are ubiquitously found in natural products, pharmaceuticals,
and other classes of organic compounds. Within this category, cyclopentenes deserve …

CeCl3·7H2O Catalyzed C–C and C–N Bond-Forming Cascade Cyclization with Subsequent Side-Chain Functionalization and Rearrangement: A Domino Approach …

D Dhara, KS Gayen, S Khamarui, P Pandit… - The Journal of …, 2012 - ACS Publications
CeCl3· 7H2O is found as an efficient catalyst for new intermolecular domino reactions of
three-, four-and seven-component assemblies of common precursors under benign reaction …

Cycloaddition of cyclopropanes for the elaboration of medium-sized carbocycles

J Caillé, R Robiette - Organic & Biomolecular Chemistry, 2021 - pubs.rsc.org
The stereocontrolled formation of medium-sized carbocycles is a major goal in modern
organic chemistry due to their widespread occurrence in natural products and …

Synergistic Catalysis: Metal/Proton‐Catalyzed Cyclization of Alkynones Toward Bicyclo[3.n.1]alkanones

S Zhu, Q Zhang, K Chen, H Jiang - Angewandte Chemie, 2015 - Wiley Online Library
A highly efficient and practical synergistically metal/proton‐catalyzed Conia–ene reaction for
the synthesis of bicyclo [3. n. 1] alkanones has been developed. This synergistic catalysis …

Highly Efficient Cascade Reaction for Selective Formation of Spirocyclobutenes from Dienallenes via Palladium-Catalyzed Oxidative Double Carbocyclization …

Y Qiu, B Yang, C Zhu, JE Bäckvall - Journal of the American …, 2016 - ACS Publications
A highly selective cascade reaction that allows the direct transformation of dienallenes to
spirocyclobutenes (spiro [3.4] octenes) as single diastereoisomers has been developed. The …

Regiocontrolled Intramolecular Cyclizations of Carboxylic Acids to Carbon− Carbon Triple Bonds Promoted by Acid or Base Catalyst

M Uchiyama, H Ozawa, K Takuma, Y Matsumoto… - Organic …, 2006 - ACS Publications
We systematically investigated, for the first time, the relationship between regioselectivity
and acid/base effects in the cyclization reactions between carboxylic acids and carbon …

A Sequential Route to Cyclopentenes from 1, 6‐Enynes and Diazo Ketones through Gold and Rhodium Catalysis

BS Kale, HF Lee, RS Liu - Advanced Synthesis & Catalysis, 2017 - Wiley Online Library
This work reports the construction of cyclopentene cores from 1, 6‐enynes and aryl diazo
ketones through two new reaction sequences involving initial gold‐catalyzed cyclization of …