A Convenient One-Pot Synthesis of Ketene Dithioacetals
作者:Didier Villemin、Abdelkrim Ben Alloum
DOI:10.1055/s-1991-26449
日期:——
An easy synthesis of ketene dithioacetals 2 and 3 by the condensation of carbon disulfide and active methylene compounds 1 with subsequent alkylation in the presence of potassium fluoride is described.
In Situ Generation of PhI<sup>+</sup>
CF<sub>3</sub>
and Transition-Metal-Free Oxidative sp<sup>2</sup>
CH Trifluoromethylation
作者:Cong Xu、Jingxin Liu、Wenbo Ming、Yingjie Liu、Jun Liu、Mang Wang、Qun Liu
DOI:10.1002/chem.201301585
日期:2013.7.8
to tri us: The introduction of CF3 units into organic molecules is important and requires the development of convenient trifluoromethylating reagents. Here, PhI+CF3, an acyclic electrophilic “CF3+” species, is described, including its in situ generation from TMSCF3, PhI(OAc)2, and KF and its direct applications in sp2 CH trifluoromethylations under mild transition‐metal‐free conditions (see scheme)
Synthesis and leishmanicidal activity of 1,3-dithiolanes (2a,b), 1,3-dithiane (2c), tetraazaacenaphthene (4a-h) and tetraazaphenalene imidazolidin-2-ylidene (5a,6a,b) and hexahydropyrimidin-2-ylidene (5b) derivatives are described. Some of the screened compounds have demonstrated significant leishmanicidal activity in in vitro and in vivo evaluations. (C) 1997 Elsevier Science Ltd.
Synthesis of some 2-ylidene-1,3-dithiolanes
作者:K. V. Lipin、O. V. Ershov、M. Yu. Belikov、S. V. Fedoseev
DOI:10.1134/s1070428017010304
日期:2017.1
Convenient procedures have been developed for the synthesis of 2-(1,3-dithiolan-2-ylidene)-malononitriles and 2-cyano-2-(1,3-dithiolan-2-ylidene) acetamides from disodium alk-1-ene-1,1-dithiolates and 1,2-dichloroalkanes, as well as from malononitrile or cyanoacetamide in a one-pot mode.