23267-68-7Relevant academic research and scientific papers
Visible Light-Promoted Synthesis of β-Keto Sulfoximines from N-Tosyl-Protected Sulfoximidoyl Chlorides
Shi, Peng,Tu, Yongliang,Wang, Chenyang,Ma, Ding,Bolm, Carsten
, p. 3817 - 3824 (2022/02/05)
Under visible light, N-tosyl-protected sulfoximidoyl chlorides react with aryl alkynes to give β-keto sulfoximines. The reaction is characterized by a high functional group tolerance and good yields. It can be improved by the presence of a ruthenium photo
Direct Bis-Alkyl Thiolation for Indoles with Sulfinothioates under Pummerer-Type Conditions
Chen, Ning,Du, Hongguang,Qi, Peng,Sun, Fang
, p. 1133 - 1143 (2022/02/07)
A base-free bis-alkyl thiolation reaction of indoles with sulfinothioates under Pummerer-type conditions is described. Sulfinothioates, activated with 2,2,2-trifluoroacetic anhydride, are demonstrated to be an efficient thiolation reagent for wide applica
Regio- and Stereoselective Chloro Sulfoximidations of Terminal Aryl Alkynes Enabled by Copper Catalysis and Visible Light
Shi, Peng,Tu, Yongliang,Zhang, Duo,Wang, Chenyang,Truong, Khai-Nghi,Rissanen, Kari,Bolm, Carsten
supporting information, p. 2552 - 2556 (2021/03/19)
By visible-light photoredox catalysis with copper complexes, sulfoximidoyl chlorides add to terminal aryl alkynes to give the corresponding (E)-β-chlorovinyl sulfoximines with exclusive regio- and stereoselectivities in high yields. Two representative pro
REAGENT FOR LACRIMATION EXAMINATION AND METHOD OF LACRIMATION EXAMINATION
-
Page/Page column 12, (2008/06/13)
A new application of the dacryogenic component of onions and analogues of the component in the medicinal field. It is a reagent for lacrimation examination which contains as an active ingredient a compound represented by the following chemical formula: wherein R represents a C1-5 alkyl chain.
Oxidative fragmentations of 2-(trimethylsilyl)ethyl sulfoxides - Routes to alkane-, arene-, and highly substituted 1-alkenesulfinyl chlorides
Schwan, Adrian L.,Strickler, Rick R.,Dunn-Dufault, Robert,Brillon, Denis
, p. 1643 - 1654 (2007/10/03)
The preparation of a collection of alkyl, aryl, and 1-alkenyl 2-(trimethylsilyl)ethyl sulfoxides is outlined, using mostly vinyltrimethylsilane or 2-(trimethylsilyl)ethanesulfenyl chloride (5) as key starting materials. The 2-(trimethylsilyl)ethyl group can be cleaved from many of the sulfoxides under oxidative fragmentation conditions using sulfuryl chloride and the reaction represents a new protocol for sulfinyl chloride synthesis. The method is suitable for most alkane- and arenesulfinyl chlorides (3), but is limited to highly substituted vinylic sulfinyl chlorides. 1-Alkenyl 2-(trimethylsilyl)ethyl sulfoxides with reduced double bond substitution (6, 7, 11) succumb to reactions involving chlorination of the double bond. The β-effect of silicon is invoked to explain the ability of the 2-(trimethylsilyl)ethyl group to induce C-S bond scission under the oxidative cleavage reaction conditions. A mechanism is offered to account for the role played by the β-silicon atom of the 2-(trimethylsilyl)ethyl group. Indeed, the silicon atom is self-sacrificial in that it diverts the course of the reaction from the usual α-carbon chlorination mode to one of oxidative cleavage, whereby the 2-(trimethylsilyl)ethyl group is lost. The overall reaction calls upon the ability of silicon atoms to donate electron density by hyperconjugation.
Allium chemistry: Microwave spectroscopic identification, mechanism of formation, synthesis, and reactions of (E,Z)-propanethial S-oxide, the lachrymatory factor of the onion (Allium cepa)
Block, Eric,Gillies, Jennifer Z.,Gillies, Charles W.,Bazzi, Ali A.,Putman, David,Revelle, Larry K.,Wang, Dongyi,Zhang, Xing
, p. 7492 - 7501 (2007/10/03)
Flow pyrolysis of 2-methyl-2-propyl 1'-propenyl sulfoxide (9b) affords a 98:2 mixture of (Z)- and (E)-propanethial S-oxide ((Z)- and (E)-5b), both characterized by Fourier transform microwave (FT-MW) spectroscopy. Sulfines (Z)- and (E)-5b are also identified by FT-MW in chopped onion volatiles and by NMR spectroscopy in onion extracts. Similarly, flow pyrolysis of 2-methyl-2-propyl vinyl sulfoxide (9c) affords (Z)- and (E)-isomers of ethanethial S-oxide (5a), identified by FT-MW methods. Pyrolysis in the presence of D2O affords (Z)-5a-d1 and (Z)-5a-d2 from 9c and (Z)-5b-d1 from 9b; (Z)-5b-d1 is also produced when an onion is homogenized in D2O. Pyrolysis of 9c with ethyl propiolate gives ethyl (E)-3-(vinylsulfinyl)acrylate (10). Neat 5a at 100°C gives acetaldehyde. On standing, 5b dimerizes to trans-3,4-diethyl-1,2-dithietane 1,1-dioxide (12a); Me3SiCH=S+-O- (5f) undergoes an analogous dimerization. Compound 5b shows moderate potency as an anticarcinogen in inducing the enzyme quinone reductase.
Sulfinyl chlorides through the oxidative chlorination of sulfenyl derivatives with trimethylsilyl acetate/sulfuryl chloride system
Drabowicz,Bujnicki,Dudzinski
, p. 1207 - 1213 (2007/10/02)
A new and useful procedure for the synthesis of sulfinyl chlorides is described involving a combined action of trimethylsilyl acetate and sulfuryl chloride as a oxidative chlorination system on sulfenyl derivatives.
The reaction of 2-trimethylsilylethyl sulfoxides with sulfuryl chloride. A fragmentation route to sulfinyl chlorides
Schwan,Dufault
, p. 3973 - 3974 (2007/10/02)
Sulfinyl chlorides were prepared in good to excellent yields by reacting aryl or alkyl 2-trimethylsilylethyl sulfoxides with SO2Cl2.
Reactions of Thionyl Chloride with Tetraorganotin(IV) Compounds
Narula, Suraj P.,Sharma, R. K.,Lata, Sneh,Walia, Rita
, p. 246 - 247 (2007/10/02)
The reactions of thionyl chloride with tetraorganotin(IV) derivatives (R4Sn where R = CH3, C2H5, n-C3H7, n-C4H9, C6H5CH2, C6H4CH3) bring about cleavage of tin-carbon bonds to give dialkyl/aryltin(IV) and alkyl/aryl sulphinyl chlorides.The ease of cleavage observed on the basis of the reactivities of R4Sn follows the order: n-C4H9 > n-C3H7 > C2H5 > CH3 > C6H5CH2 >> C6H4CH3.This order is not the same as commonly known in literature.
