characterized by a wide scope, high efficiency and straightforward isolation protocol. The synthetic utility of the dithiocarbamates and xanthates was demonstrated on the preparation of symmetrical and unsymmetricalthioureas, isothiocyanates, and thiocarbamates.
The reactions of S-alkylthioamidium iodides with some mercuric compounds have been studied. Mercuric carboxylates were found to react with S-alkylthioamidium iodides giving the corresponding acid anhydrides and amides in good yields along with alkylmercaptomercuric iodide. In addition, it was established that the reaction of mercuric cyanide with the iodides afforded α-dimethylaminomalononitriles by
Cobalt-promoted B–H and C–H activation in the three-component reactions of 16-electron cobalt carboranedithiolate, alkyne and bronsted acids
作者:Rui Zhang、Lin Zhu、Zhenzhong Lu、Hong Yan
DOI:10.1016/j.jorganchem.2015.06.013
日期:2015.12
isolated where L1–L3 loses one proton to provide 3 electrons to metal and alkyne is reduced to olefin. If L4 and L5 are used, products 4a or 4b are generated where the Bronsted acid is not observed but the alkyne is reduced to sp3 and forms a five-membered ring with Co center. Allenes (L6 and L7) lead to 5a(L6) and 5a(L7) where an allyl unit is coordinated to metal. In case of CpH (L8), compounds 6a and 6b
Cp # Co(S 2 C 2 B 10 H 10)(Cp # = Cp,1a ; MeCp,1b ; Me 4 Cp,1c ; Me 5 Cp,1d),丙酸甲酯(2)和报道了布朗斯台德酸有机配体(L1-L8)。1a和1b只能导致在碳硼烷上以环戊二烯基或甲基-环戊二烯基作为官能团在环境温度下进行选择性B-官能化,收率很高。根据所使用的布朗斯台德酸(L1-L8)的类型,可以获得四种包含B-C键的产品。如果选择了较强的配位体L1-L3,则可以分离化合物3a(L1-L3)和3b(L1-L3),其中L1-L3失去一个质子,从而为金属提供3个电子,炔烃被还原为烯烃。如果使用L4和L5,则生成产物4a或4b,其中未观察到布朗斯台德酸,但炔烃还原为sp 3并与Co中心形成一个五元环。烯丙基(L6和L7)导致5a(L6)和5a(L7),其中烯丙基单元与金属配位。在CpH(L8)的情况下,会生成含有原位的化
Pyridylthio compounds for controlling helicobacter bacteria
申请人:Byk Gulden Lomberg Chemische Fabrik GmbH
公开号:US06162809A1
公开(公告)日:2000-12-19
Pyridinylthiomethyl- and pyrimidinylthiomethyl-pyridines and their pharmacologically-acceptable compositions are useful for controlling Helicobacter bacteria and for treating those afflicted with diseases based on Helicobacter bacteria.
Dithiocarbamation of spiro-aziridine oxindoles: a facile access to C3-functionalised 3-thiooxindoles as apoptosis inducing agents
作者:Akash P. Sakla、Biswajit Panda、Kritika Laxmikeshav、Jay Prakash Soni、Sonal Bhandari、Chandraiah Godugu、Nagula Shankaraiah
DOI:10.1039/d1ob02102h
日期:——
An efficient access to C3-functionalised 3-thiooxindoles has been accomplished via direct dithiocarbamation of spiro-aziridine oxindoles. Their apoptosis-inducing properties have been investigated.