6337-27-5

Upstream product

• 108-31-6 maleic anhydride 
• 2288-18-8 2-phenyl-1,3-butadiene 
• 71-43-2 benzene 
• 7306-12-9 1-acetoxy-3-phenyl-but-3-ene 
• 84736-61-8 (+/-)-(3-hydroxy-3-phenyl-butyl)-acetate 
• 7133-68-8 3-phenylbutane-1,3-diol 
• 98-83-9 isopropenylbenzene 
• 6051-52-1 2-phenylbut-3-en-2-ol 
• 6249-81-6 3-phenyl-but-3-en-2-ol 
• 767-99-7 2-phenylbut-2-ene 
• 1565-75-9 2-phenyl-2-butanol 
• 860687-81-6 (1,2-dibromo-1-methyl-propyl)-benzene 
• 1515-78-2 buta-1,3-dien-1-ylbenzene 
• 536-74-3 phenylacetylene 

Relevant academic research and scientific papers

A ruthenium-based catalytic system with switchable selectivity between cyclotrimerization and enyne metathesis/Diels-Alder reactions of terminal alkynes

In this study, we report a practical catalytic system, [RuCl 2(p-cymene)]2/IPr (IPr: 1,3-bis(2,6 diisopropylphenyl) imidazol-2-ylidene), that can switch between cyclotrimerization and cross enyne metathesis. The cyclotrimerization reaction of phenylacetylene catalyzed by [RuCl2(p-cymene)]2 can be switched to enyne metathesis by the introduction of a sterically hindered N-heterocyclic carbene. The 1,3-diene formed during this reaction reacts with dienophiles to form the Diels-Alder adduct. A practical one-pot synthesis method, utilizing enyne metathesis/Diels-Alder reactions, was used to construct cyclic compounds in an efficient manner.

Silicon-Directed Diene Synthesis

A synthesis of 2-substituted-1,3-dienes is reported which uses silicon as a control element: eight aldehydes were converted into α-silyl ketones by treatment with trimethylsilylmethylmagnesium chloride and rapid Collins oxidation.Addition of vinylmagnesiu

A SILICON DIRECTED DIENE SYNTHESIS

A convenient method for the conversion of a series of aldehydes into substituted dienes is reported which uses silicon as a control element.

Reaktivity of Substituted 1,3-Butadienes in Diels-Alder-Reactions

Kinetic data for the reaction of substituted 1,3-dienes with tetracyanoethylene (TCNE) and other dienophiles are interpreted in terms of the FMO-model.While the expectations are fulfilled qualitatively, the kinetic data cannot be correlated quantitatively.This shows that in Diels-Alder reactions besides HOMO-LUMO separation other factors play an important role, for instance the 1,4-distance in the diene and the conformational equilibrium cisoid transoid of the diene.The kinetic data are in accord with a one-step mechanism of the cycloaddition reaction.