Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 870-50-8, formula is C10H18N2O4, Name is Di-tert-butyl diazene-1,2-dicarboxylate. They 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. Recommanded Product: Di-tert-butyl diazene-1,2-dicarboxylate.
Xia, Zi-Lei;Zheng, Chao;Xu, Ren-Qi;You, Shu-Li research published 《 Chiral phosphoric acid catalyzed aminative dearomatization of α-naphthols/Michael addition sequence》, the research content is summarized as follows. Asym. dearomatization reactions have recently emerged as a powerful tool for the rapid build-up of the mol. complexity. Chiral three-dimensional polycyclic mols. bearing contiguous stereogenic centers can be synthesized from readily available planar aromatic feedstocks. Herein, an intermol. asym. dearomatization reaction of α-naphthols I (R = 6-OMe, 7-Me, 8-CN, etc.) bearing a tethered nucleophile at the C4 position of the naphthol ring is reported using a chiral phosphoric acid as catalyst. The reaction proceeds via a highly chemo- and regioselective aminative dearomatization/Michael addition sequence, affording a wide array of functionalized cyclic ketones e.g II (Nu = O, NTs, NCO2Me, etc.) in good yields (up to 93%) with excellent enantioselectivity (up to >99% ee). The catalyst loading can be reduced to 0.1 mol%. Preliminary mechanistic investigations identify that the enantioselectivity is established in the dearomatization step, while the Michael addition is the rate-limiting step. A working model accounting for the origin of the stereochem. is proposed based on DFT calculations
870-50-8, Di-tert-butyl azodicarboxylate, also known as Di-tert-butyl azodicarboxylate, is a useful research compound. Its molecular formula is C₁₀H₁₈N₂O₄ and its molecular weight is 230.26 g/mol. The purity is usually 95%.
Di-tert-butyl azodicarboxylate is a reagent used in the electrophilic amination of β-keto esters catalyzed by an axially chiral guanidine. Building block in an enantioselective synthesis of 3,6-dihyropyridazines employing organocatalysts such a L-proline or (S)-2-pyrrolidinyl tetrazole. Utilized in the asymmetric Friedel-Crafts amination via a chiral organocatalyst.
Di-tert-butyl azodicarboxylate is a reagent used in the preparation of acyl hydrazinedicarboxylates via photoorganocatalytic hydroacylation of dialkyl azodicarboxylates with aldehydes in presence of phenylglyoxylic acid as photocatalyst., Recommanded Product: Di-tert-butyl diazene-1,2-dicarboxylate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics