highly active and reusable heterogeneouscatalysts of esterification of fatty acids with methanol and ethanol, Prins cyclization of aldehydes with isoprenol and intramolecular Prins cyclization of citronellal to isopulegol. The catalytic activity of the micro/mesoporous PPCs (TON values up to 522 mol ⋅ mol−1) was higher than that of commercial polymer‐basedheterogeneouscatalyst Amberlyst 15 possessing
Solvent-free catalysed synthesis of tetrahydropyran odorants: the role of SiO
作者:Alexandra Macedo、Edison P. Wendler、Alcindo A. Dos Santos、Julio Zukerman-Schpector、Edward R. T. Tiekink
DOI:10.1590/s0103-50532010000800023
日期:——
An efficient, green and solvent-free catalysed Prins-cyclization reaction based on the simple grinding of an aldehyde and a homoallylic alcohol in the presence of catalytic amount of p-TSA on silica gel is reported. By this protocol were synthesized tetrahydropyran odorants including commercial Florol (R) and Clarycet (R), in one and two steps respectively.
Romanov, N. A.; Kantor, E.A.; Brudnik, I. M., Journal of applied chemistry of the USSR, 1982, vol. 55, # 12, p. 2526 - 2528
作者:Romanov, N. A.、Kantor, E.A.、Brudnik, I. M.、Musavirov, R. S.、Kiladze, T. K.、Rakhmankulov, D. L.
DOI:——
日期:——
Arakelyan, A. S.; Dvoryanchikov, A. I.; Gevorkyan, A. A., Journal of Organic Chemistry USSR (English Translation), 1987, vol. 23, # 11, p. 2047 - 2050
作者:Arakelyan, A. S.、Dvoryanchikov, A. I.、Gevorkyan, A. A.
DOI:——
日期:——
POMAHOB, N. A.;KANTOR, E. A.;BRUDNIK, I. M.;MUSAVIROV, R. S.;KILADZE, T. +, ZH. PRIKL. XIMII, 1982, 55, N 12, 2778-2780
作者:POMAHOB, N. A.、KANTOR, E. A.、BRUDNIK, I. M.、MUSAVIROV, R. S.、KILADZE, T. +