A Mild Radical Method for the Dimerzation of Dithiocarbamates
作者:Ning Chen、Xin Zhong、Pingfan Li、Jiaxi Xu
DOI:10.1002/ejoc.201403348
日期:2015.2
A general, practical, and efficient method for the dimerization of dithiocarbamates has been developed that can be used to prepare the corresponding bis(1-arylimino-1-alkyl/arylthiomethyl) disulfides with dilauroyl peroxide (DLP) as mild oxidant. Notably, a lauroyl radical, rather than an undecyl radical, was established as the radical hydrogen-abstractor during the dimerization process. The amount
Palladium-Catalyzed Hetero-Cope Rearrangement of Alkyl Allyl<i>N</i>-Aryldithiocarbonimidates
作者:J. Garin、E. Meléndez、F. L. Merchán、T. Tejero、S. Uriel、J. Ayestarán
DOI:10.1055/s-1991-26400
日期:——
Palladium-catalyzed [3,3] sigmatropic rearrangement of allyl methyl N-aryldithiocarbonimidates affords methyl N-allyl-N-aryldithiocarbamates. Very high yields of rearranged products can be obtained depending on the substitution pattern of the allyl group.
Synthesis of symmetricalsubstituted 2,5‐diamino‐1,3,4‐thiadiazoles is described. Reaction of easily prepared dithiocarbamates with hydrazine gives the corresponding thiadiazoles in moderate to good yields. This method is new, efficient, and simple especially in the work‐up procedure.