24044-87-9Relevant articles and documents
Trisubstituted Highly Activated Benzo[ d]thiazol-2-yl-sulfone-Containing Olefins as Building Blocks in Organic Synthesis
Baar, Lubomír V.,J.-Y. D. Bon, David,Ková?, Ond?ej,Pospí?il, Ji?í,Roiser, Lukas,Waser, Mario,Zále?ák, Franti?ek
, p. 7192 - 7206 (2020/06/27)
In this paper, we report the formation of highly electrophilic 1,1-deactivated olefins, their use as novel synthetic building blocks, and their transformation to structurally diverse molecular scaffolds. Synthesis of 1,1-deactivated olefins substituted with a BT-sulfonyl group and a carbonyl or nitrile, respectively, consists of unusual Ti(OPri)4-mediated Knoevenagel-type condensation and proceed in good to excellent yields. Generated olefins can be further transformed in a highly stereoselective manner and in good yields to various polyfunctionalized heterocycles and acyclic molecular scaffolds. Overall, the obtained structures are accessed in two to four steps starting from the (mostly) commercially available aldehydes. In addition, the presence of the BT-sulfonyl group in prepared structures allows for further chemoselective functionalization/post-synthetic transformations to provide structurally diverse final compounds.
Continuous flow biocatalytic resolutions of methyl sulfinylacetates
Liu, Zhanxiang,Burgess, Kevin
supporting information; scheme or table, p. 6325 - 6327 (2012/01/02)
Product inhibition was encountered for some substrates in the resolution of methyl sulfinylacetates mediated by lipase Amano AK, so an apparatus to continually extract the carboxylate product was devised. This was applied to resolve some sulfoxides with h
Electrolytic Partial Fluorination of Organic Compounds. 24.1 Highly Regioselective Anodic Monofluorination of 2-Benzothiazolyl and 5-Chloro-2-benzothiazolyl Sulfides
Hou, Yankun,Higashiya, Seiichiro,Fuchigami, Toshio
, p. 9173 - 9176 (2007/10/03)
Electrochemical fluorination of 2-benzothiazolyl and 5-chloro-2-benzothiazolyl sulfides was successfully carried out using Et4NF·3HF as a supporting electrolyte and fluoride ion source in dimethoxyethane to provide the corresponding α-monofluorinated sulfides in good yields. Fluorination took place selectively at the position α to the sulfur atom of the sulfides, and the heterocyclic moieties were not fluorinated at all.