17604-09-0

Upstream product

• 941-55-9 4-toluenesulfonyl azide 
• 768-30-9 4-tert-butyl-tetrahydro-2H-thiopyran 
• 50635-63-7 3-tert-butylpentan-1,5-dioic acid 
• 50635-65-9 3-tert-Butylpentane-1,5-diol 
• 50635-64-8 3-tert-butyl-pentanedioic acid diethyl ester 
• 127-65-1 chloroamine-T 

Relevant academic research and scientific papers

Stereoelectronic Effects: Perlin Effects in Thiane-Derived Compounds

Stereoelectronic effects in thianes and thiane-derived sulfoxides, sulfones, sulfilimines, and sulfoximines were investigated by measuring 1JC,H coupling constants and by identification of normal and reversed Perlin effects, i.e., of differences in the coupling constants for equatorial and axial C–H bonds in the methylene groups of six-membered rings. The Perlin effects were correlated with results from natural bond orbital (NBO) analyses. NMR experiments were performed with conformationally restricted dimethyl- or tert-butyl-substituted derivatives, while the parent compounds were used for calculations. It turned out that the coupling constants are not only strongly influenced by stereoelectronic interactions with antiperiplanar C–H, C–C, C–O, and C–N bonds, but by the s character of the respective C–H bonds' carbon orbital as well.

Selectivity in the Electrophilic Addition of Carbenes and Nitrenes to Aliphatic Sulphides and to 4-t-Butylthian

Photogenerated bisalkoxycarbonyl- and diacetyl-carbenes add exclusively equatorially to 4-t-butylthian and exhibit selectivity in competitive additions to mixtures of dimethyl- and di-isopropyl sulphides.By contrast ethoxy-carbonyl- and p-tolylsulphonyl-nitrene give equal proportions of axial and equatorial adducts with the thian, and show no selectivity in competitive reactions with dialkyl sulphides.The results in most or all cases appear to be determined by kinetic control.