New method for aziridination of olefinic esters is described.
新的烯丙基酯环氧胺化方法。
TRANSITION METAL COMPLEXES OF AMINO ACIDS AND RELATED LIGANDS AND THEIR USE AS CATALYSTS, ANTI-MICROBIALS, AND ANTI-CANCER AGENTS
申请人:Virginia Tech Intellectual Properties, Inc.
公开号:US20130096090A1
公开(公告)日:2013-04-18
The present invention relates to the fields of chemistry and pharmaceuticals. Embodiments of the present invention provide transition metal complexes of amino acids. Transition metal complexes of embodiments of the invention according to Categories I, II, III, and/or IV may be used as antimicrobial, anti-malarial, and anti-cancer agents, as well as catalysts in chemical reactions. Such compounds of the invention are particularly useful for combating multi-drug resistance against a broad range of microbials (such as MRSA and mycobacteria), including gram positive and gram negative bacteria, as well as can be used as anti-cancer agents against bladder cancer, breast cancer, colon cancer, rectal cancer, endometrial cancer, kidney cancer, leukemia, lung cancer, melanoma, non-Hodgkin's lymphoma, pancreatic cancer, prostate cancer, and thyroid cancer, to name a few.
Ynolates react with ketones at room temperature to afford α,β,β-trisubstituted acrylates (tetrasubstituted olefins) with 2:1−8:1 geometrical selectivities. This can be regarded as a new olefination reaction of ketones giving tetrasubstituted olefins in good yield, even in the case of sterically hindered substrates. The reaction mechanism involves cycloaddition of ynolates with a carbonyl group and
Tetrasubstituted (Z)-alkenes were readily prepared through the Horner-Wadsworth-Emmons reactions of methyl 2-[bis(2,2,2-trifluoroethyl)phosphono]propionate with arylalkylketones by employing Sn(OSO(2)CF(3))(2) and N-ethylpiperidine.
Tandem Blaise/retro-Blaise Reaction for the Nitrile-Mediated Regioselective Intermolecular Addition of Unstabilized Zinc Ester Enolates (Reformatsky Reagents) to 1-Alkynes and 1,3-Enynes
作者:Ju Hyun Kim、Yu Sung Chun、Sang-gi Lee
DOI:10.1021/jo402015n
日期:2013.11.15
of a nitrile as a mediator to achieve the regioselective intermolecular addition of unstabilized zinc ester enolates (Reformatskyreagents) to 1-alkynes and 1,3-enynes. This reaction is made possible by a reversible addition of enolates to a nitrile (Blaise reaction), generating a zinc aza-enolate that, unlike zinc ester enolates, can add intermolecularly to 1-alkynes and 1,3-enynes. Subsequent removal