Functional Group Scope in the Methylene-Free, Tandem Enyne Metathesis
摘要:
The methylene-free ring synthesis of 1,3-cyclohexadienes has been expanded to include a diverse set of functional group-rich terminal and internal alkynes.
Novel 1,3-diene synthesis from alkyne and ethylene by ruthenium-catalyzed enyne metathesis
作者:Atsushi Kinoshita、Norikazu Sakakibara、Miwako Mori
DOI:10.1016/s0040-4020(99)00297-5
日期:1999.7
A novel 1,3-diene synthetic method fromalkyne and ethylene was developed using ruthenium-catalyzed enyne metathesis. The reaction procedure is very simple: A CH2Cl2 solution of alkyne was stirred at room temperature under ethylene gas (1 atm.) in the presence of a catalytic amount of ruthenium benzylidene complex. The yield was good and the conversion yield was high. Dienes having functional groups
Combining Oxidative N-Heterocyclic Carbene Catalysis with Click Chemistry: A Facile One-Pot Approach to 1,2,3-Triazole Derivatives
作者:B. T. Ramanjaneyulu、Virsinha Reddy、Panjab Arde、Sriram Mahesh、R. Vijaya Anand
DOI:10.1002/asia.201300138
日期:2013.7
A combination of the oxidative N‐heterocyclic carbene catalysis and click chemistry has been explored for the direct, one‐potsynthesis of 1,2,3‐triazole derivatives from aromaticaldehydes. This procedure was found to be very efficient and a variety of 1,2,3‐triazole derivatives could be accessed through their corresponding propargyl esters in moderate‐to‐good yields under mild conditions.
Controlling Selectivity in Shuttle Hetero‐difunctionalization Reactions: Electrochemical Transfer Halo‐thiolation of Alkynes
作者:Xichang Dong、Martin Klein、Siegfried R. Waldvogel、Bill Morandi
DOI:10.1002/anie.202213630
日期:2023.1.9
Shuttle catalysis is emerging as a potent strategy to unleash unprecedented synthetic flexibility in organic synthesis. Herein, we disclose a rare example of shuttle hetero-difunctionalization to transfer two distinct functional groups between β-halosulfides and alkynes with excellent chemo-, regio-, and stereoselectivity via a paired electrolysis process. This unfolds new opportunities for selective