Addition of thiols to 2-alkoxypropenal in neutral medium at 20degreesC in the absence of a catalyst occurs regioselectively, following the Markownikoff pattern. The resulting 2-alkoxy-2-R-thiopropanals are capable of undergoing spontaneous isomerization to 1-alkoxy-1-R-thiopropanones. The addition and isomerization processes are accelerated by heating to 60degreesC or in the presence of acid catalysts (TsOH, HCl). The reaction is also accompanied by partial disproportionation of 2-oxopropanal O,S-acetals to give O,O- and S,S-acetals.
KEJKO, N. A.;STEPANOVA, L. G.;KALIXMAN, I. D.;VORONKOV, M. G., IZV. AN CCCP. CEP. XIM., 1986, N 3, 722-724
作者:KEJKO, N. A.、STEPANOVA, L. G.、KALIXMAN, I. D.、VORONKOV, M. G.
DOI:——
日期:——
Reaction of ?-alkoxyacroleins with thiols
作者:N. A. Keiko、L. G. Stepanova、I. D. Kalikhman、M. G. Voronkov
DOI:10.1007/bf00953258
日期:1986.3
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作者:N. A. Keiko、E. A. Funtikova、L. G. Stepanova、Yu. A. Chuvashev、L. I. Larina
DOI:10.1023/a:1020893310626
日期:——
Addition of thiols to 2-alkoxypropenal in neutral medium at 20degreesC in the absence of a catalyst occurs regioselectively, following the Markownikoff pattern. The resulting 2-alkoxy-2-R-thiopropanals are capable of undergoing spontaneous isomerization to 1-alkoxy-1-R-thiopropanones. The addition and isomerization processes are accelerated by heating to 60degreesC or in the presence of acid catalysts (TsOH, HCl). The reaction is also accompanied by partial disproportionation of 2-oxopropanal O,S-acetals to give O,O- and S,S-acetals.