TY - JOUR
T1 - Thermal [4 + 2] cycloadditions of 3-acetyl-, 3-carbamoyl-, and 3-ethoxycarbonyl-coumarins with 2,3-dimethyl-1,3-butadiene under solventless conditions
T2 - A structural study
AU - Flores-Larios, Irma Y.
AU - López-Garrido, Lizbeth
AU - Martínez-Martínez, Francisco J.
AU - González, Jorge
AU - García-Báez, Efrén V.
AU - Cruz, Alejandro
AU - Padilla-Martínez, Itzia I.
PY - 2010/3
Y1 - 2010/3
N2 - The thermal [4+2] cycloadditions of 3-acetyl-, 3-carbamoyl, and 3-ethoxycarbonylcoumarins with 2,3-dimethyl-1,3-butadiene under solvent free conditions are reported, as well as the epoxidation reactions of some adducts. Discussion is focused on the structural features of the Diels-Alder adducts and their epoxides, based upon NMR, X-ray, and mass spectral data, and supported by ab initio theoretical calculations.
AB - The thermal [4+2] cycloadditions of 3-acetyl-, 3-carbamoyl, and 3-ethoxycarbonylcoumarins with 2,3-dimethyl-1,3-butadiene under solvent free conditions are reported, as well as the epoxidation reactions of some adducts. Discussion is focused on the structural features of the Diels-Alder adducts and their epoxides, based upon NMR, X-ray, and mass spectral data, and supported by ab initio theoretical calculations.
KW - 6a,7,7a,8a,9,9a- hexahydro-7a,8a-dimethyl-6-oxo-6h-5,8-dioxacyclopropa[b]phenantrenes
KW - Coumarins
KW - Diels-Alder adducts
KW - Solventless reactions
UR - http://www.scopus.com/inward/record.url?scp=77950349179&partnerID=8YFLogxK
U2 - 10.3390/molecules15031513
DO - 10.3390/molecules15031513
M3 - Artículo
SN - 1420-3049
VL - 15
SP - 1513
EP - 1530
JO - Molecules
JF - Molecules
IS - 3
ER -