77144-23-1

Upstream product

• 97585-04-1 ethyl (E)-3-(4-methylphenyl)acrylate 
• 74-88-4 methyl iodide 
• 917-54-4 methyllithium 
• 115-18-4 2-methyl-3-buten-2-ol 
• 102-87-4 tridodecylamine 
• 106-38-7 para-bromotoluene 
• 79756-91-5 2-methyl-4-(4-methylphenyl)-3-butyn-2-ol 
• 624-31-7 4-tolyl iodide 
• 115-19-5 2-methyl-but-3-yn-2-ol 

Downstream Products

• 77144-26-4 (2E,4E)-3-Methyl-5-p-tolyl-penta-2,4-dienal 
• 349668-02-6 (3E)-2-methoxy-2-methyl-4-(4-methylphenyl)-3-butene 
• 60234-82-4 (2E,4E)-3-Methyl-5-p-tolyl-penta-2,4-dienoic acid 
• 96307-92-5 C₁₂H₁₅⁽¹⁺⁾ 

Relevant academic research and scientific papers

Aqueous phase semihydrogenation of alkynes over Ni-Fe bimetallic catalysts

Bimetallic Ni-Fe catalysts (Ni/Fe, 1?:?1, 1?:?3, and 3?:?1) are synthesized and explored for their catalytic activity in semihydrogenation of internal alkynes using H2 gas in water-ethanol solution. Our findings revealed that over the Ni1Fe3 catalyst a high diastereoselectivity for Z-alkenes with a high conversion for a wide range of internal alkynes can be achieved at moderate reaction temperature (40 °C). Notably, the selectivity for the Z-alkenes is enhanced in the presence of n-butyl amine as an additive. Deuterium labeling experiments evidenced that H2 gas becomes dissociated homolytically over the catalyst surface to hydrogenate alkynes to alkenes. Synthesized catalysts were successfully characterized by HR-TEM, SEM, XPS, EDS, P-XRD and H2-TPD.

Highly activated vinyl hydrogen in a significantly twisted styrene

(Chemical Equation Presented) The novel example of a vinylic hydrogen more reactive than a benzylic hydrogen was found by treatment of a twisted styrene derivative with a strong base followed by D2O quenching. In this paper, the full details of

Vinyl hydrogen more reactive than benzyl hydrogen toward base in significantly twisted styrenes

The novel example of vinyl hydrogen more reactive than benzylic hydrogen was found by treatment of a twisted styrene derivative with a strong base followed by D2O quenching. The characteristic nature of the vinyl hydrogen, which is activated by

UV-vis and IR spectral characterization of persistent carbenium ions, generated upon incorporation of cinnamyl alcohols in the acid zeolites HZSM-5 and HMor

Cinnamyl alcohol (1) and two derivatives 2 and 3 have been incorporated in dehydrated HMor and HZSM-5 zeolites with the aim to characterize spectroscopically the corresponding carbocations generated within the solids. Product studies of the supernatant liquid phase combined with diffuse reflectance UV-vis and IR spectroscopy provide unequivocal evidence for the carbocations. Thus, cinnamyl alcohol (1) affords the 1,5-diphenylpentadienyl cation in HMor and HZSM-5 as a persistent species. In the case of HMor with larger pore dimensions the bulkier 1-(2′-cinnamyl)-3-phenylpropenyl cation was also spectroscopically detected. No persistent carbocation was observed when the α-methylcinnamyl alcohol (2) was incorporated in the acid zeolites, wherein a complete cyclization to 2-methylindene takes place. Finally, incorporation of 2-methyl-4-tolyl-3-buten-2-ol (3) in HZSM-5 allowed detection of the gem-dimethyl-subsituted p-methylcinnamyl cation, with a lifetime of hours. This cation is not persistent enough in HMor to be characterized. The present study illustrates how structurally related allylic substrates may give distinct carbenium ions whose persistence depends on the host-guest fit in the interior of the acid zeolites.

Process for the preparation of aryl substituted aldehydes, ketones and alcohols

Upon reacting an alcohol having an olefinic double bond with an aryl bromide or iodide in the presence of a Paladium catalyst, there is provided either an aryl substituted aldehyde, ketone or olefinic alcohol.