Benzenesulfonylimino

As in the preceding subsection, l,2-bis(benzenesulfonylimino)-4,5-dimethyl-benzene (598) and 2-phenylthiazolo[3,2-fl]quinolinium-l-olate (599) in dichloromethane at 20°C during 15 min afforded l,4-bis(benzenesulfonyl)-6,7-dimethyl-3-phenyl-3-(quinolin-2-ylthio)-3,4-dihydro-2(l//)-quinoxalinone (600) in almost quantitative yield. " ... 

Methoxyphenyl benzenesulfonylimino tellurium chloride and 5,5-dimethyl-l,3-dioxo-cyclohexane in benzene solution reacted on addition of triethylamine to give 5,5-dimethyl-1,3-dioxo-2-cyclohexyl 5,5-dimethyl-1,3-dioxo-2,2-cyclohexylidene 4-methoxyphenyl tellurium5. 

Dimethyl-l,3-dioxo-2-cyclohexyl 5,5-Dimethyl-l,3-dioxo-2,2-cyclohcxyhdene 4-Methoxyphenyl Tellurium1 1.9 g (4.5 mmol) of 4-methoxyphenyl benzenesulfonylimino tellurium chloride and 1.26 g (9 mmol) of 5,5-dimcthyl-1.3-dioxocyclohexane are suspended in 50 ml of benzene. A solution of 0.46 g (0.6 ml 4.5 mmol) of triethylamine in 10m/of benzene is added dropwise to the stirred suspension and the mixture is allowed to stand for 1 day. The precipitate is filtered off, washed with cold acetonitrile, then with water, and dried in the air yield 1.8 g (79%) m.p. 132° (from acetonitrile). 

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