1601-04-3

Upstream product

• 3375-38-0 1,4-dibenzoylbutane 
• 124-41-4 sodium methylate 
• 67-56-1 methanol 
• 64-17-5 ethanol 
• 141-52-6 sodium ethanolate 
• 111-50-2 Adipic acid dichloride 
• 1601-09-8 phenyl(2-phenylcyclopent-2-en-1-yl)methanone 
• 70597-60-3 1-Benzoyl-5-phenyl-1-cyclopenten 
• 4851-15-4 2--1-phenyl-cyclopent-1-en 
• 71-43-2 benzene 

Downstream Products

• 825-54-7 cyclopent-1-en-1-ylbenzene 
• 741689-33-8 2-phenyl-cyclopent-1-enecarboxylic acid amide 
• 4851-21-2 1-Phenyl-2--cyclopent-1-en 
• 55-21-0 benzamide 
• 65-85-0 benzoic acid 
• 1501-05-9 5-oxo-5-phenylvaleric acid 
• 101723-12-0 3-benzoyl-2-phenyl-cyclopentanone 
• 4851-31-4 2-(N-Benzoyl-benzimidoyl)-1-phenyl-cyclopent-1-en 
• 4851-32-5 2--1-phenyl-cyclopent-1-en 
• 4851-33-6 2--1-phenyl-cyclopent-1-en 
• 4851-38-1 1-<α-(N-Methyl-benzoylamino)-benzyliden>-2-phenyl-cyclopent-2-en 
• 5196-48-5 1-<α-(N-Aethyl-benzoylamino)-benzyliden>-2-phenyl-cyclopent-2-en 
• 4851-39-2 2-Phenyl-1-<α-(N-propyl-benzoylamino)-benzyliden>-cyclopent-2-en 
• 4851-15-4 2--1-phenyl-cyclopent-1-en 

Relevant academic research and scientific papers

Carbonyl-Olefin Metathesis Catalyzed by Molecular Iodine

The carbonyl-olefin metathesis reaction could facilitate rapid functional group interconversion and allow construction of complicated organic structures. Herein, we demonstrate that elemental iodine, a very simple catalyst, can efficiently promote this chemical transformation under mild reaction conditions. Our mechanistic studies revealed intriguing aspects of the activation mode via molecular iodine and the iodonium ion that could change the previously established perception of catalyst and substrate design for the carbonyl-olefin metathesis reaction.

α-Carbonyl Cations in Sulfoxide-Driven Oxidative Cyclizations

The selective, metal-free generation of α-carbonyl cations from simple internal alkynes was accomplished by the addition of a sulfoxide to a densely substituted vinyl cation. The high reactivity of the α-carbonyl cations was found to efficiently induce hydrogen and even carbon shift reactions with unusual selecivities. Complex compounds with highly congested tertiary and all-carbon-substituted quartenary carbon centers can thus be accessed in a single step from simple precursors. Mechanistic analysis strongly supports the intermediacy of the title compounds and provides a simple predictive scheme for the migratory aptitude of different substituents.

AlCl3-mediated aldol cyclocondensation of 1,6- and 1,7-diones to cyclopentene and cyclohexene derivatives

Exactly 1/3 mol of AlCl3 is sufficient to cyclize 1 mol of 1,?-dibenzoylbutane (or pentane) to a cyclopentenone (or hexenone) derivative in high yield at room temperature in 40 min to several hours. This condensation is driven by removing elements of water as HCl and Al(OH)3, and the product enones are exclusively unconjugated, unlike the base-catalyzed condensations providing thermodynamically more stable conjugated enones.