A convenient and efficient method for the synthesis of various structurally functionalized sulfinates shows good substrate generality of alcohols and sodium sulfinates.
Catalyst-free sulfenylation of indoles with sulfinic esters in ethanol
作者:Xiuqin Yang、Yishu Bao、Zonghao Dai、Qingfa Zhou、Fulai Yang
DOI:10.1039/c8gc01764f
日期:——
A novel catalyst-free method for the synthesis of structurally diverse indole thioethers in moderate to excellent yields has been developed. In this reaction, sulfinic esters serve as newsulfur electrophiles.
A mixed anhydride approach to the preparation of sulfinate esters and allylic sulfones: Trimethylacetic p-toluenesulfinic anhydride
作者:Eric Jacobsen、Mihir K. Chavda、Kokou M. Zikpi、Stephanie L. Waggoner、Daniel J. Passini、Jesse A. Wolfe、Robert Larson、Chelsea Beckley、Christopher G. Hamaker、Shawn R. Hitchcock
DOI:10.1016/j.tetlet.2017.06.074
日期:2017.8
anhydride. This reagent has been used to prepare a series of sulfinate esters from primary and secondary alcohols. In addition, the reagent was used to convert Baylis-Hillman substrates into allylic sulfones. Attempts to use the reagent to convert amines to sulfinamides were unsuccessful. In contrast, the use of 2-pyrrolidinone afforded N-p-toluenesulfinyl pyrrolidinone in 64% yield. The use of a chiral
甲苯亚磺酸和三甲基乙酰氯的试剂组合产生推定的三甲基乙酸对甲苯磺酸亚酐。该试剂已用于从伯醇和仲醇制备一系列亚磺酸酯。此外,该试剂用于将Baylis-Hillman底物转化为烯丙基砜。尝试使用该试剂将胺转化为亚磺酰胺的尝试均未成功。与此相反,使用2-吡咯烷酮,得到ñ - p在64%收率-toluenesulfinyl吡咯烷酮。使用手性4-苄基-1,3-恶唑烷酮或4-苄基-1,3-恶唑烷-2-硫酮导致的隔离的小号- p -甲苯基p -toluenethiosulfonate。
Bismuth(III) Bromide-Catalysed Substitution of Benzyl Alcohols with Arylsulfonylmethyl Isocyanides: An Unexpected Access to Sulfinates
A bismuth(III) bromide‐catalysed direct substitution of benzylalcohols with arylsulfonylmethylisocyanides affords sulfinates under mild acidic conditions. An unforeseen reversed reactivity was observed in this highly selective formation of sulfinates instead of the formation of the usually favoured sulfones. Cytotoxicity tests (in vitro) indicated that the sulfinates exhibit antibiotic activity against
Substrate- and temperature-controlled divergence in reactions of alcohols with TosMIC catalyzed by BF<sub>3</sub> · Et<sub>2</sub>O: Facile access to sulfinates and sulfones
ABSTRACT An efficient BF3 · Et2O-catalyzed divergent synthesis of sulfinate esters and sulfones through C–O and C–S bond formation has been achieved from alcohols and p-toluenesulfonylmethyl isocyanide (TosMIC). Various alcohols reacted smoothly with TosMIC under the present conditions at room temperature providing sulfinate esters exclusively. By tuning the reaction temperature, the alcohols that