80339-91-9

Upstream product

• 80326-63-2 C₈H₁₂N₄ 
• 80326-63-2 4,6-Cyclooctadien-1,2-dion-(E,Z)-dihydrazon 
• 629-20-9 1,3,5,7-cyclooctatetraene 
• 58696-64-3 2-Hydroxy-2,4,6-cyclooctatrien-1-on 
• 79831-71-3 C₉H₁₃N₃O 
• 80326-37-0 Cycloocta-3,5-dien-1-one 
• 23346-40-9 (+/-)-3-bromo-cycloocta-1c,5c-diene 
• 62163-78-4 (Z,Z)-2,6-Cyclooctadien-1-ol 
• 1552-12-1 1,5-cis,cis-cyclooctadiene 
• 96743-76-9 2-Hydroxy-4,6-cyclooctadien-1-on 
• 31351-00-5 (Z,Z)-2,6-cyclooctadien-1-one 
• 58696-00-7 3,7-Cyclooctadien-1,2-dion 

Downstream Products

• 100-42-5 styrene 
• 80326-64-3 4-Phenyl-2,4,6-triazatricyclo<5.4.2.0^2,6>tridec-12-en-9-in-3,5-dion 

Relevant academic research and scientific papers

STRAINED CYCLOALKENYNES

Presently known strained cycloalkynes with one, two or three additional cis- or trans-configurated double bonds are summarized in Table 3.The main topics of the article are the geometrical ring strain, the preparation or in situ generation of these compounds by fragmentation of the corresponding 1,2,3-selendiazoles, and the thermal isomerisation processes performed at room temperature or in flash pyrolysis experiments at 440-640 deg C.

The Symmetrical Cyclooctadienynes: 1,5-Cyclooctadien-3-yne and 1,3-Cyclooctadien-6-yne

Starting with 1,5-cycloctadiene (1) and cyclooctatetraene (2), respectively, the title compounds 16 and 17, highly strained members of the C8H8-series, can be generated in six or seven steps and isolated in pure state.Their stability and their chemical behaviour is discussed.Di- and oligomerisations on the one hand and Diels-Alder reactions on the other are mainly concerned. 16 and 17 are very reactive dienophiles; moreover 17 can also be used as a diene.