32551-27-2Relevant academic research and scientific papers
Access to 4-substituted isothiazoles through three-component cascade annulation and their application in C-H activation
Huang, Guoling,Li, Jian,Ji, Xiaoliang,Chen, Lu,Liu, Qiang,Chen, Xiuwen,Huang, Yubing,Li, Yibiao
, p. 5763 - 5766 (2020/07/15)
The use of potassium ethyl xanthate (EtOCS2k) as a sulfur atom donor enabled the transition-metal-free [3 + 1 + 1] cascade annulation of isopropene derivatives with NH4I in DMSO/H2O, affording various 4-substituted isothiazoles in moderate to good yields
Multicomponent reaction for the first synthesis of 2,2-dialkyl- and 2-alkyl-2-aralkyl-5,6-diaryl-2H-1,3-thiazines as scaffolds for various 3,4-dihydro-2H-1,3-thiazine derivatives
Brockmeyer, Fabian,Schoemaker, Robin,Schmidtmann, Marc,Martens, Juergen
, p. 5168 - 5181 (2014/07/08)
A two-step sequence for the synthesis of various 3,4-dihydro-2H-1,3- thiazines is presented. In the first step, 2H-1,3-thiazines were prepared by a new multicomponent reaction (MCR). Starting from β-chlorovinyl aldehydes, this MCR offers an efficient and facile access to 2,2-dialkyl- and 2-alkyl-2-aralkyl-5,6-diaryl-2H-1,3-thiazines. The potential of these products in subsequent reactions was verified by the conversion to 3,4-dihydro-2H-1,3- thiazine-containing bisamides, β-lactams, and methoxy amides.
THERMOLYSIS OF 1,3-DITHIOL-2-YL AZIDES AND THERMAL PROPERTIES OF THE RESULTING 1,4,2-DITHIAZINES
Nakayama, Juzo,Sakai, Atsuhiro,Tokiyama, Akira,Hoshino, Masamatsu
, p. 3729 - 3732 (2007/10/02)
2-Substituted 1,3-dithiol-2-yl azides, on thermolysis in refluxing toluene, give 3-substituted 1,4,2-dithiazines wich thermally extrude sulfur atom of the 4-position selectively to yield 3-substituted isothiazoles, while 2-unsubstituted 1,3-dithiol-2-yl azides undergo both ring expansion yielding 1,4,2-dithiazines and peculiar thermal dissociation into 1,3-dithiol-2-ylidene carbenes and hydrogen azide.
