Silver-Catalyzed Formal Inverse Electron-Demand Diels–Alder Reaction of 1,2-Diazines and Siloxy Alkynes
作者:Yunus E. Türkmen、Timothy J. Montavon、Sergey A. Kozmin、Viresh H. Rawal
DOI:10.1021/ja302537j
日期:2012.6.6
A highly effective silver-catalyzed formal inverse electron-demand Diels-Alder reaction of 1,2-diazines and siloxyalkynes has been developed. The reactions provide ready access to a wide range of siloxy naphthalenes and anthracenes, which are formed in good to high yields, under mild reaction conditions, using low catalyst loadings.
Silver-Catalyzed Aldehyde Olefination Using Siloxyalkynes
作者:Jianwei Sun、Valerie A. Keller、S. Todd Meyer、Sergey A. Kozmin
DOI:10.1002/adsc.200900835
日期:2010.3.22
describe the development of a silver‐catalyzed carbonyl olefination employing electron‐rich siloxyalkynes. This process constitutes an efficient synthesis of trisubstituted unsaturated esters, and represents an alternative to the widely utilized Horner–Wadsworth–Emmons reaction. Excellent diastereoselectivities are observed for a range of aldehydesusing either 1‐siloxy‐1‐propyne or 1‐siloxy‐1‐hexyne. This
Three-component reaction discovery enabled by mass spectrometry of self-assembled monolayers
作者:Timothy J. Montavon、Jing Li、Jaime R. Cabrera-Pardo、Milan Mrksich、Sergey A. Kozmin
DOI:10.1038/nchem.1212
日期:2012.1
Multicomponent reactions are employed extensively in many areas of organic chemistry. Despite significant progress, the discovery of such enabling transformations remains challenging. Here, we present the development of a parallel, label-free reaction-discovery platform that can be used in the identification of new multicomponent transformations. Our approach is based on parallel mass spectrometric screening of interfacial chemical reactions on arrays of self-assembled monolayers. This strategy enabled the identification of a simple organic phosphine that can catalyse a previously unknown condensation of siloxyalkynes, aldehydes and amines to produce 3-hydroxyamides with high efficiency and diastereoselectivity. The reaction was further optimized using solution-phase methods. A general reaction-discovery platform has been used for identification of a new multicomponent transformation. The approach entails rapid analysis of interfacial chemical reactions on arrays of self-assembled monolayers using mass spectrometry. This enabled identification of a simple organic phosphine that catalyses a previously unknown condensation of siloxy alkynes, aldehydes and amines.
DANHEISER, RICK L.;NISHIDA, ATSUSTHI;SAVARIAR, SELVARAJ;TROVA, MICHAEL P., TETRAHEDRON LETT., 29,(1988) N 39, C. 4917-4920
作者:DANHEISER, RICK L.、NISHIDA, ATSUSTHI、SAVARIAR, SELVARAJ、TROVA, MICHAEL P.
DOI:——
日期:——
[2+2+2] Cycloadditions of Siloxy Alkynes with 1,2-Diazines: From Reaction Discovery to Identification of an Antiglycolytic Chemotype
作者:Timothy J. Montavon、Yunus E. Türkmen、Noumaan A. Shamsi、Christopher Miller、Chintan S. Sumaria、Viresh H. Rawal、Sergey A. Kozmin
DOI:10.1002/anie.201305711
日期:2013.12.16
Cycloaddition uncovered: The title reaction produces novel polycyclic compounds with high efficiency and excellent diastereoselectivity under mild reaction conditions. A small‐molecule library, synthesized using this reaction, yielded a novel chemotype which inhibited glycolytic ATP production by blocking glucose uptake in CHO‐K1 cells. DMF=N,N‐dimethylformamide, Tf=trifluoromethanesulfonyl, TIPS=triisopropylsilyl
未发现环加成反应:在温和的反应条件下,标题反应产生了高效且具有优异非对映选择性的新型多环化合物。使用该反应合成的小分子文库产生了一种新的化学型,该化学型通过阻断 CHO-K1 细胞中的葡萄糖摄取来抑制糖酵解 ATP 的产生。DMF= N,N-二甲基甲酰胺,Tf=三氟甲磺酰基,TIPS=三异丙基甲硅烷基。