[EN] STORE OVERLOAD-INDUCED CALCIUM RELEASE INHIBITORS AND METHODS FOR PRODUCING AND USING THE SAME [FR] INHIBITEURS DE LIBÉRATION DU CALCIUM INDUITE PAR UNE SURCHARGE DU STOCK CALCIQUE ET LEURS MÉTHODES DE PRODUCTION ET D'UTILISATION
We disclose a direct C(sp)–, C(sp2)–, and C(sp3)–H thiolation reaction using β-sulfinylesters as the versatile sulfur source. The key step of this protocol is chemoselective C–S bond cleavage of the sulfoniumsalts that are formed in situ from the corresponding alkenes, alkynes, and 1,3-dicarboxyl compounds with β-sulfinylesters. The successful capture of the acrylate byproduct supports a retro-Michael
Synthesis of Highly Enantioenriched Sulfonimidoyl Fluorides and Sulfonimidamides by Stereospecific Sulfur–Fluorine Exchange (SuFEx) Reaction
作者:Stephanie Greed、Edward L. Briggs、Fahima I. M. Idiris、Andrew J. P. White、Ulrich Lücking、James A. Bull
DOI:10.1002/chem.202002265
日期:2020.10
enantioselective synthesis of sulfonimidamides, including the first stereoselective synthesis of enantioenriched sulfonimidoyl fluorides, and studies on their reactivity. A new route to sulfonimidoyl fluorides is presented from solid bench‐stable, N‐Boc‐sulfinamide (Boc=tert‐butyloxycarbonyl) salt building blocks. Enantioenriched arylsulfonimidoyl fluorides are shown to be readily racemised by fluoride ions.
Supported cobalt complex-catalysed conjugate addition of indoles, amines and thiols to α,β-unsaturated compounds
作者:Fatemeh Rajabi、Sepideh Razavi、Rafael Luque
DOI:10.1039/b926599f
日期:——
A highly active and reusable supported Co(II) complex on SBA-15 shows an excellent activity and selectivity to target products in aza- and thia-Michael conjugate additions of indoles, amines and thiols to α,β-unsaturated compounds undersolventless mild reactionconditions. The Co-catalyst was also highly reusable and comparably more active than related catalysts in the reaction.
Borax as an Efficient Metal-Free Catalyst for Hetero-Michael Reactions in an Aqueous Medium
作者:Sahid Hussain、Saitanya K. Bharadwaj、Mihir K. Chaudhuri、Harjyoti Kalita
DOI:10.1002/ejoc.200600691
日期:2007.1
Borax, a naturally occurring material, very efficiently catalyzed the conjugate addition of thiols, dithiols and amines to α,β-unsaturated ketones, nitriles, amides, aldehydes and esters in an aqueousmedium to afford the corresponding Michael adducts in good yields at room temperature. Recycling of the catalyst and scaling up of the reactions are important attributes of this catalysis. The reactions
An efficientmethod is reported to synthesize sulfonamides on DNA from sulfinic acids or sodium sulfinates and amines in the presence of iodine under mild conditions. This method demonstrates a major expansion of scope of sulfonamide formation on DNA through the utilization of a novel sodium carbonate-sodium sulfinate bifunctional reagent class.