- Synthesis of 2-Imino-1,3,4-Thiadiazoles from Hydrazides and Isothiocyanates via Sequential Oxidation and P(NMe2)3-Mediated Annulation Reactions
-
A P(NMe2)3-mediated annulation reaction of N-Acyldiazenes with isothiocyanates, producing 2-imino-1,3,4-Thiadiazoles, is reported. This reaction proceeds well with crude N-Acyldiazenes derived from the oxidation of hydrazides by iodi
- Huang, Zhengyan,Zhang, Qianqian,Zhao, Qiongli,Yu, Wenquan,Chang, Junbiao
-
supporting information
p. 4378 - 4382
(2020/06/03)
-
- Thermolysis of polyazapentadienes. Part 10. Flash vacuum pyrolysis of azoalkenes and some azocarbonyl compounds
-
Thermolysis of the azoalkenes (1) and (6) - (8) takes place by 4π-electron electrocyclisation, followed by elimination of HCN to give imines. Decomposition of the related compounds (9)-(12) is less well defined, though the indole (22) has been identified from the thermolysis of (10) at high temperature. Alternatively, the azo ketones (15) - (18) undergo homolysis of the central C-N bond at 750 °C, and low yields of biaryls, formed by intermolecular radical coupling are generally found. Decarbonylation of intermediate aroyl radicals is extremely rapid under these conditions.
- McNab, Hamish,Murray, M. Elizabeth-Ann
-
p. 583 - 587
(2007/10/02)
-