Rhodium-Catalyzed Novel Carbonylative Carbotricyclization of Enediynes was written by Ojima, Iwao;Lee, Seung-Yub. And the article was included in Journal of the American Chemical Society in 2000.Category: esters-buliding-blocks This article mentions the following:
The reaction of dodec-11-ene-1,6-diynes with dimethyl(phenyl)silane in the presence of a rhodium catalyst under ambient carbon monoxide afforded fused 5-7-5-membered tricyclic structures incorporating carbon monoxide. Suitable catalysts were dicarbonyl(acetylacetonato)rhodium, dodecacarbonyl tetrarhodium and tetracarbonyldi-μ-chlorodirhodium. The compounds thus prepared were derivatives of cyclopent[e]azulen-5-one. Also prepared were derivatives of cyclohepta[2,1-c:3,4-c’]difuran and cyclohepta[2,1-c:4,5-c’]dipyrrole. In the experiment, the researchers used many compounds, for example, Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9Category: esters-buliding-blocks).
Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics