2497-54-3

Upstream product

• 1987-93-5 7,9-Dimethyl-1-oxo-1,2,3,4-tetrahydro-phenanthren 
• 575-37-1 1,7-dimethylnaphthalene 
• 1987-92-4 4-(4,6-Dimethyl-naphthyl-1)-buttersaeure 
• 2142-69-0 2-bromophenyl methyl ketone 
• 26767-16-8 2-(2-bromophenyl)-2-oxoacetic acid 
• 2947-29-7 4-<4.6-Dimethyl-naphthyl-(1)>-4-oxo-buttersaeure 
• 2237-78-7 7.9-Dimethyl-1.2.3.4-tetrahydro-phenanthren 

Relevant academic research and scientific papers

Palladium-Catalyzed Sequential Vinyl C–H Activation/Dual Decarboxylation: Regioselective Synthesis of Phenanthrenes and Cyclohepta[1,2,3-de]naphthalenes

The application of a C(vinyl), C(aryl)-palladacycle from vinyl-containing substrates is challenging due to the interference of a reactive double bond in palladium catalysis. This Letter describes a [4 + 2] or [4 + 3] cyclization based on a C(vinyl), C(aryl)-palladacycle by employing α-oxocarboxylic acids as the insertion units under a palladium/air system. The reaction proceeded through the key vinyl C–H activation and dual decarboxylation sequence, forming phenanthrenes and cyclohepta[1,2,3-de]naphthalenes regioselectively in good yields. The synthetic versatility of this protocol is highlighted by the gram-scale synthesis and synthesizing functional material molecule.

Oxidative, Iodoarene-Catalyzed Intramolecular Alkene Arylation for the Synthesis of Polycyclic Aromatic Hydrocarbons

A catalytic, metal-free and chemoselective oxidative intramolecular coupling of arene and alkene C?H bonds is reported. The active hypervalent iodine (HVI) reagent, generated catalytically in situ from iodotoluene and meta-chloroperoxybenzoic acid (m-CPBA), reacts with o-vinylbiphenyls to generate polyaromatic hydrocarbons in up to 95 % yield. Experimental evidence suggests the reactions proceed though vinyliodonium and, possibly, vinylenephenonium intermediates.