56956-46-8

Upstream product

• 73642-94-1 2,2-dichloro-undecane 
• 73642-98-5 2-chloro-1-undecen 
• 15997-12-3 1,1-dichloro-2-octyl cyclopropane 
• 73642-96-3 (Z)-2-Chlor-2-undecen 
• 70063-88-6 (+/-)-undec-1-yn-3yl acetate 
• 111462-99-8 bromo-3 undecyne-1 
• 71606-97-8 (1-methyl-decylidene)-nitro-amine 

Downstream Products

• 133295-23-5 3-Methylene-2-octyl-1-(toluene-4-sulfonyl)-2,3-dihydro-1H-indole 
• 133295-24-6 4-Methylene-3-octyl-2-(toluene-4-sulfonyl)-1,2,3,4-tetrahydro-isoquinoline 
• 133322-48-2 4-Non-(Z)-ylidene-2-(toluene-4-sulfonyl)-1,2,3,4-tetrahydro-isoquinoline 
• 133322-48-2 4-Non-(E)-ylidene-2-(toluene-4-sulfonyl)-1,2,3,4-tetrahydro-isoquinoline 
• 138205-98-8 (E/Z)-1-dimethylphenylsilyl-2-undecene 
• 138205-99-9 (E)-2-dimethylphenylsilyl-2-undecene 
• 138206-00-5 dimethyl(phenyl)(undec-1-en-2-yl)silane 
• 693-61-8 (E)-2-undecene 
• 821-95-4 1-undecene 
• 821-96-5 (Z)-2-undecene 
• 126065-92-7 2-ethynyl-1-phenyl-decanol 
• 126065-93-8 2-ethynyl-1-(4-methoxy-phenyl)-decanol 
• 126065-94-9 3-ethynyl-2-phenyl-undecan-2-ol 
• 124-19-6 nonan-1-al 

Relevant academic research and scientific papers

REDUCTION DE DERIVES D'ALCOOLS PROPARGYLIQUES CATALYSEE PAR UN COMPLEXE DE PALLADIUM ZEROVALENT

Catalysis by tetrakis(triphenylphosphine)palladium of the reaction of hydride donnors with secondary propargylic bromides, mesylates and phosphates increases markedly the amount of allene produced.The best results in that direction are obtained with mesylates and phosphates by using lithium triethylborohydride.The reaction then occurs with an ANTI introduction of the hydride with respect to the leaving group.A mechanism is proposed which explains the influence of the various parameters of the reaction.

Preparation of 1,2-Dienes by the Palladium-Catalyzed Hydrogenolysis of 3-Methoxycarbonyloxy-1-alkynes with Ammonium Formate

A useful preparative method for 1,2-dienes from 3-methoxycarbonyloxy-1-alkynes by the palladium-catalyzed hydrogenolysis with ammonium formate is described. 3-Methoxycarbonyloxy-1-alkynes are prepared by the addition of magnesium acetylide to ketones or aldehydes, followed by quenching with methyl chloroformate.

The Reaction of 2-Alkyl-1,1-dichlorocyclopropanes with Lithium Naphtalene

2-Alkyl-1,1-dichlorocyclopropanes react with lithium naphthalene to give a mixture of dechlorinated alkylcyclopropanes and unsaturated hydrocarbons.For example, a mixture of octylcyclopropane and undec-1-yne was obtained from the reaction of 1,1-dichloro-2-octylcyclopropane and lithium naphthalene.

Application of Phase Transfer Catalysis, 14.- Preparation of Alkynes from Halides with Solid Potassium tert-Butoxide and Crown Ether

Preparatively very simple and mild HX eliminations with solid potassium tert-butoxide in petroleum ether in the presence of catalytic amounts of crown-6 are described. 1,2-Dihalides (from alkenes) and 1,1-dihalides (from aldehydes) yield 1-alkynes; internal geminal dihalides (from symmetric ketones) give internal alkynes in excellent yields. 2,2-Dihalides (from methyl ketones) yield homogeneous 1-alkynes only if the 3-position is blocked. (E)-Haloalkenes lead also to alkynes in a syn-elimination process.