Facile synthesis of spiro chromanone-tetrahydrothiophenes with three contiguous stereocenters via sulfa-Michael/aldol cascade reactions
作者:Ya-Jian Hu、Xiao-Bing Wang、Su-Yi Li、Sai-Sai Xie、Kelvin D.G. Wang、Ling-Yi Kong
DOI:10.1016/j.tetlet.2014.11.026
日期:2015.1
A novel sulfa-Michael/aldol cascade reaction of (E)-3-arylidenechroman-4-ones with 1,4-dithiane-2,5-diol has been developed. This method provides a new practical and facile approach to 4′-hydroxy-2′-aryl-4′,5′-dihydro-2′H-spiro[chroman-3,3′-thiophen]-4-ones with three contiguous stereocenters in high yields. The transformation is atom-economic with good to excellent diastereoselectivities.
Levai, Albert; Silva, Artur M. S.; Patonay, Tamas, Journal of Heterocyclic Chemistry, 1999, vol. 36, # 5, p. 1215 - 1222
作者:Levai, Albert、Silva, Artur M. S.、Patonay, Tamas、Cavaleiro, Jose A. S.
DOI:——
日期:——
Iodine-promoted sequential Michael and oxidative dehydrogenation processes: synthesis of trisubstituted methanes containing a coumarin and a chromone ring
作者:Ya-Jian Hu、Neng Jiang、Sai-Sai Xie、Su-Yi Li、Jin-Shuai Lan、Ling-Yi Kong、Xiao-Bing Wang
DOI:10.1016/j.tet.2015.08.056
日期:2015.10
An iodine-promoted convenient and environmentally friendly sequential method for the synthesis of trisubstituted methanes bearing a coumarin and a chromone ring is described. The remarkable features of this approach include avoidance of metals, working under air, employment of readily available starting materials, good functional group tolerance and simple operation. (C) 2015 Elsevier Ltd. All rights reserved.
Gomis, M.; Kirkiacharian, B.S.; Likforman, J., Bulletin de la Societe Chimique de France, 1988, # 3, p. 585 - 590
作者:Gomis, M.、Kirkiacharian, B.S.、Likforman, J.、Mahuteau, J.
DOI:——
日期:——
GOMIS, M.;KIRKIACHARIAN, B. S.;LIKFORMAN, J.;MAHUTEAU, J., BULL. SOC. CHIM. FR.,(1988) N 3, C. 585-590
作者:GOMIS, M.、KIRKIACHARIAN, B. S.、LIKFORMAN, J.、MAHUTEAU, J.