Diethyl selenite

Compound (1) reacted with selenium dioxide to afford the disubstituted selenium derivative (49). Nucleophilic attack at the pyrrolopyridine C-3 atom by diethyl selenite, generated from selenium dioxide and ethanol, afforded the product (49) in 44% yield (Equation 6). An analogous reaction was carried out using sulfur dichloride to give the thio derivative (50) (44%). Both reactions are shown in Equation (6) <92BCJ2992>. 

Sc4N4 is prepared by ammonolysis of selenium tetrahalides, diselenium dichloride,selenium di-oxide, or diethyl selenite. It is rather unstable and decomposes explosively on heating or by sudden impact. 

Selenious diamide is formed by reaction of ammonia with diethyl selenite or seleninyl bis(dimethylamide) (equation 54). ... 

In addition to selenoxides and seleninic acids as oxidation agents, diethyl selenite (109) was reported as the first efficient oxygen transfer reagent. Namely, it was found [48] that diethyl selenite (109), easily prepared by the reaction of selenium dioxide with ethanol [54], is able to convert selected... 

Wolesensky J. Am. Chem. Soc. 291 215 (1907) by the action of dry ammonia on a dilute soln of selenium monochloride in carbon disulfide van Valkenburg, Bailar ibid. 47, 2134 (1925) by the action of dry ammonia on diethyl Selenite or dimethyl selenite dissolved in benzene and washing with potassium cyanide Strecker Schwarzkopf Z, Anorg. Chem. 221, 193 (1934) by reacting anhydr, liquid ammonia with selenium dioxide Jander Doetsch, Ber. 93, 561 (1960), Crystal structure Baernighausen et al. Acta Cryst 15 615 (1962) 21, 571 (1966),... 

REACTION OF AMMONIA WITH DIETHYL SELENITE IN BENZENE SOLUTION... 

The starting materials for preparing diethyl selenite are C3HgONa and SeOCl3. A solution of 20 g. of Na in 200 ml. of... 

On the other hand when diethyl selenite reacted with primary alcohols it gave dialkyl selenite by alcohol interchange but with secondary and tertiary alcohols only partial replacement was observed. ... 

A mixture of diethyl sulfite, selenium dioxide, and a little water (or ethanol) warmed under Ng until SOa-evolution starts, and after the vigorous reaction has subsided heated until all Se02 is dissolved diethyl selenite. Y 94%. F. e. s. R. C. Paul, K. K. Bhasin, and R. D. Sharma, Indian J. Chem. 13, 292 (1975). 

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