报道了从相应的苯酚(1)到3-苯并[ b ]噻吩-2-基丙烯酸酯(2)的一锅法。酯还原反应和随后的羟基酯化反应会生成伪三烯酸酯(II),其经过分子内Diels–Alder(IMDA)反应生成两种2-oxa-9-噻吩并环戊[ b ] fluoren -3-one产物(I)-主要Diels- der木产品重新定义为7。
报道了从相应的苯酚(1)到3-苯并[ b ]噻吩-2-基丙烯酸酯(2)的一锅法。酯还原反应和随后的羟基酯化反应会生成伪三烯酸酯(II),其经过分子内Diels–Alder(IMDA)反应生成两种2-oxa-9-噻吩并环戊[ b ] fluoren -3-one产物(I)-主要Diels- der木产品重新定义为7。
An intramolecular Diels–Alder route to novel tetracyclic benzo[b]thiophene derivatives
作者:Pilho Kim、Jennifer M. Tsuruda、Marilyn M. Olmstead、Shawn Eisenberg、Mark J. Kurth
DOI:10.1016/s0040-4039(02)00565-8
日期:2002.5
A one-potroute to 3-benzo[b]thiophen-2-yl-acrylates (2) from the corresponding thiophenols (1) is reported. Ester reduction and subsequent hydroxyl esterification deliver psuedo trienoates (II) which undergo an intramolecular Diels–Alder (IMDA) reaction to give two 2-oxa-9-thiacyclopenta[b]fluoren-3-one products (I)—the major Diels–Alder product rearomatizes to 7.
报道了从相应的苯酚(1)到3-苯并[ b ]噻吩-2-基丙烯酸酯(2)的一锅法。酯还原反应和随后的羟基酯化反应会生成伪三烯酸酯(II),其经过分子内Diels–Alder(IMDA)反应生成两种2-oxa-9-噻吩并环戊[ b ] fluoren -3-one产物(I)-主要Diels- der木产品重新定义为7。