Preparation of New Functionalized Cyclopropylmagnesium Reagents We thank the Deutsche Forschungsgemeinschaft (Leibniz program) and the G.I.F. (German-Israeli Foundation for Scientific Research and Development (I-535-083.05/97) for financial support. We are grateful to BASF AG (Ludwigshafen), Chemetall GmbH (Frankfurt), and Degussa AG (Hanau) for generous gifts of chemicals.
Stereoselective Enzymatic Synthesis of Heteroatom-Substituted Cyclopropanes
作者:Oliver F. Brandenberg、Christopher K. Prier、Kai Chen、Anders M. Knight、Zachary Wu、Frances H. Arnold
DOI:10.1021/acscatal.7b04423
日期:2018.4.6
repurposing of hemoproteins for non-natural carbene transfer activities has generated enzymes for functions previously accessible only to chemical catalysts. With activities constrained to specific substrate classes, however, the synthetic utility of these new biocatalysts has been limited. To expand the capabilities of non-natural carbene transfer biocatalysis, we engineered variants of Cytochrome P450BM3
Divergent Synthesis of Cyclopropane-Containing Lead-Like Compounds, Fragments and Building Blocks through a Cobalt Catalyzed Cyclopropanation of Phenyl Vinyl Sulfide
作者:Stephen J. Chawner、Manuel J. Cases-Thomas、James A. Bull
DOI:10.1002/ejoc.201701030
日期:2017.9.15
space for drug discovery. A cobalt‐catalyzed cyclopropanation of phenyl vinyl sulfide affords these scaffolds on multigram scale. Divergent, orthogonal derivatization is achieved through hydrolysis, reduction, amidation and oxidation reactions as well as sulfoxide–magnesium exchange/functionalization. The cyclopropyl Grignard reagent formed from sulfoxide exchange is stable at 0 °C for > 2 h, which enables
Preparation of New Functionalized Cyclopropylmagnesium Reagents We thank the Deutsche Forschungsgemeinschaft (Leibniz program) and the G.I.F. (German-Israeli Foundation for Scientific Research and Development (I-535-083.05/97) for financial support. We are grateful to BASF AG (Ludwigshafen), Chemetall GmbH (Frankfurt), and Degussa AG (Hanau) for generous gifts of chemicals.
作者:Viet Anh Vu、Ilan Marek、Kurt Polborn、Paul Knochel