19774-38-0

Upstream product

• 41649-14-3 cis-1,4-dimethoxy-2-butene 
• 22805-71-6 (E)-1,4-dimethoxy-2-butene 
• 54477-71-3 {(P(CH₂CH₂P(C₆H₅)2)3)FeH(N₂)}⁽¹⁺⁾*{B(C₆H₅)4}^(1-)={(P(CH₂CH₂P(C₆H₅)2)3)FeH(N₂)}{B(C₆H₅)4} 
• 2798-73-4 (Z)-1-methoxybut-1-en-3-yne 

Downstream Products

• 74503-37-0 3-Methoxy-4-cyclohexen-1,1,2,2-tetracarbonitril 
• 105435-34-5 N-[1-(6-Methoxy-3,6-dihydro-2H-pyran-2-yl)-ethyl]-4-methyl-benzenesulfonamide 
• 105435-38-9 N-[1-(6-Methoxy-3,6-dihydro-2H-pyran-2-yl)-2-phenyl-ethyl]-4-methyl-benzenesulfonamide 
• 123-73-9 trans-Crotonaldehyde 
• 7319-38-2 3-butenal 

Relevant academic research and scientific papers

Mixed metal bases as promoters of 1,4-eliminations

When treated with the LIDAKOR mixture, allyl type ethers very readily undergo 1,4-elimination to afford conjugated dienes (3 - 73). In typical cases, the reaction is brought about stereo- and regioselectively (2 and 7, respectively). Under suitable conditions, lithium dimethylamide or even lithium diisopropylamide adds to the dienes generated in situ thus leading to a variety of new allyl amines (5-8).

A homogeneous iron(II) system capable of selectively catalyzing the reduction of terminal alkynes to alkenes and buta-1,3-dienes

Terminal alkynes are selectively hydrogenated to alkenes by the iron(II) catalyst precursors [(PP3)FeH-(N2)]BPh4 and [(PP3)FeH(H2)]BPh4 in THF under very mild conditions [PP3 = P(CH2CH2PPh3)3]. The catalytic reductive dimerization of HC≡CSiMe3 to 1,4-bis(trimethylsilyl)butadiene prevails over alkene formation at reflux temperature.