The thiating effect of 1,3,2,4-dithiadiphosphitane2,4-bis(4-methoxyphenyl)-2,4-disulfide (1) on car­ bonyl compounds, leads to the formation of their thio-analogous [1—4], We have recently reported on the reaction of 1 with acetamides [5] and dicarbonyl compounds [6]. On the other hand, there are no compounds having o-diazo-thiono groups were re­ corded in the literature. Based on this findings...

In this paper, two novel alkali clearable disperse dyes were synthesized. 4-flourosulfonyl aniline and 2-nitro-4-flourosulfonyl aniline were utilized as the diazo components and 2- naphthol as the coupling component. The DSC, FTIR, 1HNMR and UV-Vis analyses were used to characterize the synthesized intermediates and dyes. The synthesized dyes were used to dye polyester fibers and their dyeing p...

[reaction: see text] A series of beta-thio group substituted alpha-diazo carbonyl compounds have been prepared by nucleophilic substitution reactions of thiophenol, thionaphthol, or benzyl mercaptan with beta-acetoxy-alpha-diazo carbonyl compounds. The diazo decomposition of these diazo carbonyl compounds with various transition metal catalysts, including Rh(II) carboxylates and Cu(I) and Cu(II...

Carbon–carbon bond forming reactions have been at the centre of organic synthesis for decades allowing efficient and quick assembly of complex molecular structures. Among many others, organoboron compounds are oen the reagents of choice as they promote C–C bond formation reactions with high chemoand stereoselectivity without the need for expensive, sometimes unstable and toxic transition metal...

Diazo groups are found in a range of natural products that possess potent biological activities. Despite longstanding interest in these metabolites, diazo group biosynthesis is not well understood, in part because of difficulties in identifying specific genes linked to diazo formation. Here we describe the discovery of the gene cluster that produces the o-diazoquinone natural product cremeomyci...