A Rhodium(I)-Catalyzed Formal Allenic Alder Ene Reaction for the Rapid and Stereoselective Assembly of Cross-Conjugated Trienes was written by Brummond, Kay M.;Chen, Hongfeng;Sill, Peter;You, Lingfeng. And the article was included in Journal of the American Chemical Society in 2002.Formula: C10H14O4 This article mentions the following:
A rhodium(I)catalyzed allenic Alder ene reaction to prepare cross-conjugated trienes, e.g., I, has been discovered. The scope and limitations are currently being investigated, and the results obtained to date are given. This method shows enticing functional group compatibility by tolerating terminal and internal alkynes, hydroxy, sulfonamide, ether, and diester groups. Progress has been made to increase the stereoselectivity of the olefinic side chain via an unprecedented iridium(I) catalyzed Alder-ene reaction. In the experiment, the researchers used many compounds, for example, Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9Formula: C10H14O4).
Diethyl 2-(prop-2-yn-1-yl)malonate (cas: 17920-23-9) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Formula: C10H14O4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics