Heterocyclization of dimethyl malonate with SH acids and formaldehyde in the presence of catalysts
摘要:
Three-component heterocyclization of dimethyl malonate with SH acids (H2S, ethane-1,2-dithiol) and formaldehyde in the presence of 5 mol % of transition metal chlorides (FeCl3, CoCl2, NiCl2) gave dimethyl 1,3-dithiane-5,5-dicarboxylate and dimethyl 1,4-dithiepane-6,6-dicarboxylate. The reactions in the presence of transition metal chlorides hydrates were accompanied by Krapcho decarboxylation with formation of methyl 1,3-dithiane-5-carboxylate and methyl 1,4-dithiepane-6-carboxylate.
Heterocyclization of dimethyl malonate with SH acids and formaldehyde in the presence of catalysts
作者:V. R. Akhmetova、N. S. Akhmadiev、V. M. Yanybin、N. F. Galimzyanova
DOI:10.1134/s1070428013070191
日期:2013.7
Three-component heterocyclization of dimethyl malonate with SH acids (H2S, ethane-1,2-dithiol) and formaldehyde in the presence of 5 mol % of transition metal chlorides (FeCl3, CoCl2, NiCl2) gave dimethyl 1,3-dithiane-5,5-dicarboxylate and dimethyl 1,4-dithiepane-6,6-dicarboxylate. The reactions in the presence of transition metal chlorides hydrates were accompanied by Krapcho decarboxylation with formation of methyl 1,3-dithiane-5-carboxylate and methyl 1,4-dithiepane-6-carboxylate.