7417-50-7

Upstream product

• 38484-41-2 3,4,4-trimethylpent-1-yn-3-ol 
• 13994-33-7 4-methyl-1,2,3-pentatriene 
• 77-78-1 dimethyl sulfate 

Downstream Products

• 1350447-30-1 (R)-3,4,4-trimethylpent-1-en-3-yl 4-methoxybenzoate 
• 564-02-3 2,2,3-trimethylpentane 
• 39761-57-4 (E)-3,4,4-trimethyl-2-pentene 
• 564-03-4 3,4,4-trimethyl-1-pentene 
• 39761-64-3 Z-3,4,4-trimethyl-2-pentene 
• 81624-75-1 (1R,5R)-3-Phenyl-6-[1,2,2-trimethyl-prop-(E)-ylidene]-3-aza-bicyclo[3.2.0]heptane-2,4-dione 
• 81624-79-5 (3aS,7aR)-5-tert-Butyl-6-((R)-2,5-dioxo-1-phenyl-pyrrolidin-3-yl)-2-phenyl-3a,4,7,7a-tetrahydro-isoindole-1,3-dione 

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