130614-23-2Relevant articles and documents
Simultaneous and stereoselective formation of planar and axial chiralities in enantiopure sulfinyl iron diene complexes
Paley, Robert S.,Liu, Jane M.,Lichtenstein, Bruce R.,Knoedler, Vanessa L.,Sanan, Toby T.,Adams, Drew J.,Fernandez, Jorge,Rablen, Paul R.
, p. 309 - 312 (2003)
(Matrix presented) Enantiopure (1Z,3E)-1-sulfinyl dienes bearing an o-dithianylphenyl group can be prepared and complexed with (bda)Fe(CO) 3 to afford the corresponding sulfinyl diene iron(0) tricarbonyl complexes. This diastereoselective compl
Visible-light mediated facile dithiane deprotection under metal free conditions
Dharpure, Pankaj D.,Bhowmick, Anindita,Warghude, Prakash K.,Bhat, Ramakrishna G.
, (2019/12/09)
Visible light mediated facile and selective dithiane deprotection under metal free conditions is developed. Eosin Y (1 mol%) proved to be an effective catalyst for the dithiane deprotection under the ambient photoredox conditions. The standard household compact fluorescent light source (CFL bulb) proved to be effective under open-air conditions in aqueous acetonitrile at room temperature. The protocol that exhibits a broad substrate scope and functional group tolerance has been shown to expand to a range of transformations for the electron-rich and -deficient thioacetals and thioketals. The synthetic utility of this protocol has also been demonstrated by gram-scale application.
A 2 - substituted - 1, 3 - dithiane derivative of the preparation method
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Paragraph 0023; 0024; 0025; 0026, (2019/06/26)
The invention provides a preparation method of a 2-substituted-1,3-dithiane derivative. The preparation method comprises the following steps: adding 1,3-dithiane (CAS:505-23-7) and 1,2-dichloroethane (DCE) or dichloromethane (DCM) into a reaction bottle, adding N-chlorosuccinimide (NCS) under ice-bath condition, and stirring for 0.5-1 h to prepare a 2-chloro-1,3-dithiane solution; and adding an aldehyde or ketone compound and a lewis acid catalyst into the above solution, and reacting to prepare the 2-substituted-1,3-dithiane derivative. By using the 1,3-dithiane solid and different types of aldehyde and keto-carbonyl compounds as raw material and using one or more of ferric trichloride, boron trifluoride diethyl etherate, methanesulfonic acid, aluminum trichloride, ferrous chloride and nickel chloride as catalysts, preparation of the 2-substituted-1,3-dithiane derivative is realized. The catalysts used in the invention are cheap and easily available, dosage of the catalysts is low and pollution of the catalysts is little. The solid raw materials used in the invention can avoid use of fetid toxic 1,3-dimercaptopropane with strong volatility, and the purpose of protecting an experimenter's body and reducing environmental pollution is realized. In addition, the preparation method has advantages of mild reaction condition, high yield, simple operation and the like.
A selective removal of the secondary hydroxy group from ortho-dithioacetal-substituted diarylmethanols
Czarnecka, Anna,Kowalska, Emilia,Bodzioch, Agnieszka,Skalik, Joanna,Koprowski, Marek,Owsianik, Krzysztof,Ba?czewski, Piotr
supporting information, p. 1229 - 1237 (2018/06/13)
We present a successful deoxygenation reaction of ortho-1,3-dithianylaryl(aryl)methanols which enables a selective removal of the secondary hydroxy group in presence of the 1,3-dithianyl moiety under reductive conditions. This reaction proceeds well with
