نتایج جستجو برای: sulfones
تعداد نتایج: 1199 فیلتر نتایج به سال:
play novel properties as materials. Although there are a variety of methods known for the preparation of sulfones, the majority of these processes feature associated limitations. For example, oxidation of the corresponding sulfide relies on functional-group compatibility with oxidizing agents and the availability of catalysts to promote selectivity for sulfone formation over sulfoxide formation...
“Prepackaged” Ramberg–Bäcklund reagents may be defined as compounds having sulfonyl and α-halogen groups which, following an appropriate first step, require only base to give by Ramberg–Bäcklund (“RB”) reaction olefinic end products with an increase in total number of carbon atoms. The synthesis and reactions of several previously unknown α,β-unsaturated chloromethyl sulfones is presented, exte...
A convenient and efficient phosphine-catalyzed sequential annulation domino reaction between dienic sulfones and MBH carbonates has been developed. In the presence of 20 mol% of tris(4-fluorophenyl)phosphine, functionalized bicyclo[4.1.0]heptenes were prepared in excellent yields and stereoselectivities under mild conditions.
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید