Diethyl sulfite

Phenylacetonitrile reacts with diethyl sulfite to give 3-hydroxy-4,5-diphenylisothia2ole, together with other products (75SST(3)541). Phenylketene reacts with compound (199) to give a mixture of the isothiazolidinone (200) and the pyrrole (201 Scheme 33) (77SST(4)339, 79SST(5)345). 

Sulfurous acid has never been isolated as a pure compound, although it has recently been detected in the gas phase by neutralization reionization mass spectrometry (NRMS) following the facile dissociative ionization (70 eV) of either diethyl sulfite or ethanesulfonic acid " ... 

The compound, prepared by by co-condensation of diethyl sulfite (3.5 mmol) and chlorine fluoride (10 mmol) at —196°C, followed by slow warming to —78, then —20°, is unstable. Trap-to-trap distillation must be effected with great care, as violent explosions occurred (even on this small scale) when cryogenic cooling was removed from the traps. Scaling up is not recommended. 

Diethyl sulfite reaction, 10 530 Diethyltoluenediamine (DETDA), 25 197 Dietzeite, 6 471t Difasol process, 26 899 Difenzoquat, 13 322 Difference spectroscopy, 14 236 23 144 Difference tests, in flavor characterization, 11 512... 

The alcoholysis of sulfites such as dimethyl sulfite offers a convenient method for the preparation of high-boiling dialkyl sulfites [33]. Earlier, Voos and Blanke [8a] reported that dimethyl sulfite is converted to diethyl sulfite in 44 % yield. The reaction was shown to be acid-catalyzed and failed when barium carbonate was present. However, a patent refers to the use of lithium hydride in the transalcoholysis of 2,2-(4,4 -dihydroxyphenyl)propane with diphenyl sulfite or di-o-cresyl sulfite [32]. Recently Mehrotra and Mathur [34] reported that the alcoholysis reaction proceeds in the absence of catalysts. Their results are summarized in Eqs. (21)—(23) and Table VII. Tertiary butanol did not... 

An esterification agent, sulfurous acid forms dimethyl sulfile (CHjO) SO, bp 126°C and diethyl sulfite (C2H50)2S0, bp 161°C. Sulfites give a white predpitate with barium chloride, soluble in HC1 with evolution of SO . Sulfites decolorize iodine in acid solution. 

Diethylhydrogallium, see Diethylgallium hydride, 1715 Diethylhydroxytin hydroperoxide, 1757 Diethyllead dinitrate, 1686 Diethylmagnesium, 1681 Diethylmethylphosphine, 2030 Diethyl 4-nitrophenyl phosphate, 3323 Diethyl 4-nitrophenyl thionophosphate, 3322 t 3,3-Diethylpentane, 3193 Diethyl peroxide, 1693 Diethyl peroxydicarbonate, 2440 Diethylphosphine, 1728 N- (D i ethylphosphinoy 1) h yd ro x y I a m i n e, 1746 Diethyl phosphite, 1727 Diethyl succinate, 3026 Diethyl sulfate, 1704 Diethyl sulfite, 1703 Diethyl telluride, 1711 Diethylthallium perchlorate, 1676 Diethyl trifluoroacetosuccinate, 3314 Diethylzinc, 1712... 

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