DAURIA M.; PIANCATELLI G.; SSETTRI A., TETRAHEDRON, 1980, 36, NO 12, 1877-1878
作者:DAURIA M.、 PIANCATELLI G.、 SSETTRI A.
DOI:——
日期:——
DAURIA M.; PIANCATELLI G.; SSETTRI A., TETRAHEDRON, 1980, 36, NO 20-21, 3071-3074
作者:DAURIA M.、 PIANCATELLI G.、 SSETTRI A.
DOI:——
日期:——
DJURIC, STEVAN W.;HAACK, RICHARD A.;MIYASHIRO, JULIE M.
作者:DJURIC, STEVAN W.、HAACK, RICHARD A.、MIYASHIRO, JULIE M.
DOI:——
日期:——
Synthesis of 4-ylidenebutenolides and 4-oxo-2-enoic acid methyl esters from 5-methoxy-2-furyl carbinols
作者:M. D'Auria、G. Piancatelli、A. Scettri
DOI:10.1016/0040-4020(80)88034-3
日期:1980.1
5-methoxy-2-furyl carbinols (8) were converted by ZnCl2 catalysis into a 3:1 mixture of 4-ylidene-butenolides (9) and 4-oxo-2-enoic acid methyl esters (10). The carbonium ion 12 is the key intermediate, the stability of which made the conversion very fast providing high yields.
A useful preparation of 5-nitro-2-furan derivatives
作者:M. D'Auria、G. Piancatelli、A. Scettri
DOI:10.1016/0040-4020(80)80090-1
日期:1980.1
Alkyl-(5-bromo-2-furyl) carbinols 1 are converted with good yields into the corresponding 5-nitro derivatives 2 by reaction with silver nitrite. Furthermore, the singular reactivity of pyridinium chlorochromate towards products 2 results in high yields of (5-nitro-2-furyl) alkyl ketones 3 with a long side chain.