133705-69-8

Upstream product

• 5664-20-0 vinylidenecyclohexane 
• 6906-17-8 2,2-dibromo-1-methylene-spiro<2,5>octane 

Downstream Products

• 177749-26-7 (2,3-Bis-trimethylsilanyl-propenylidene)-cyclohexane 
• 133705-91-6 (C₆H₁₀)CCHCH₂Sn(CH₃)3 
• 661-69-8 hexamethyldistannane 
• 90886-29-6 H₂CC(Sn(CH₃)3)CH(C₆H₁₀) 
• 133705-90-5 (C₆H₁₀)CC(CH₃)Sn(CH₃)3 
• 135753-03-6 (C₂H₅)3SnCH₂CSn(C₂H₅)3CH(C(CH₃)3) 
• 71321-11-4 1,1-pentamethylene-3-(trimethylsilyl)-1,2-butadiene 
• 5664-10-8 allylidenecyclohexane 
• 20023-43-2 1,1-pentamethylene-1,2-butadiene 

Relevant academic research and scientific papers

Polylithiumorganic compounds - 23. 1: 3,4-dilithio-1,2-butadienes by addition of lithium metal to 1,4-unsymmetrically substituted butatrienes

The synthesis of the highly reactive 1,4-unsymmetrically substituted butatrienes 12a-c is described. When employing a strict synthetic protocol, these alkatrienes react with lithium metal to 3,4-dilithio-1,2-butadienes 20a-c as stable intermediates. The structure of 20 is supported by IR and NMR spectroscopic evidence. The same dianionic intermediate can be prepared in one case by double deprotonation of the 1,2-butadiene 19. Upon derivatization, either 3,4-disubstituted 1,2-butadienes 24, 2,3-disubstituted 1,3-butadienes 25, or 1,4-disubstituted 2-butynes 26 are formed, depending on the nature of the electrophile employed. Copyright