106543-69-5

Upstream product

• 106543-66-2 4,5,6,6a,7a,8-Hexahydrooxireno<4,5>cycloocta<1,2-d><1,2,3>selenadiazol 
• 479-33-4 2,3,4,5-tetraphenylcyclopenta-2,4-dienone 
• 106543-68-4 cis-9-Oxabicyclo<6.1.0>non-3-in 

Relevant academic research and scientific papers

9-Oxabicyclononynes

Semiempirical quantum mechanics (MNDO) and force field calculations (MM 2) reveal that two diastereomeric conformations a and b of low energy exist for each of the three isomeric cis-9-oxabicyclononynes 1 - 3.Synthetically, the highly strained comp

Synthesis of 9-Oxabicyclonon-3-yne

Starting with 1,5-cyclooctadiene (1), the title compound 9 is gained in a synthesis of seven steps. 9 exists in two conformations 9a and 9b, of which 9a shows a strong interaction between the oxygen atom and the strained triple bond.Thermal fragmentation of the 1,2,3-selenadiazole 7 is used for the introduction of the triple bond.The structural proof of 7 is performed by 2D-NMR spectroscopy.