A new domino-Knoevenagel–hetero-Diels–Alder reaction
摘要:
Various novel 3,5a,6,11b-tetrahydro-2H,5H-chromeno[4',3':4,5]thiopyrano[2,3-d][1,3]thiazol-2-ones were synthesized in 60-80% yields via domi no-Knoevenagel-hetero-Diels-Alder reactions of 4-thioxo-1,3-thiazolidin-2-one with 3,7-dimethyl-6-octenal, 2-allyloxybenzaldehydes and 2-formylphenyt (E)-3-aryl-2-propenoates with base catalysis. The possibility of stereo- and regioselective cycloaddition was investigated. (c) 2008 Elsevier Ltd. All rights reserved.
A new domino-Knoevenagel–hetero-Diels–Alder reaction
摘要:
Various novel 3,5a,6,11b-tetrahydro-2H,5H-chromeno[4',3':4,5]thiopyrano[2,3-d][1,3]thiazol-2-ones were synthesized in 60-80% yields via domi no-Knoevenagel-hetero-Diels-Alder reactions of 4-thioxo-1,3-thiazolidin-2-one with 3,7-dimethyl-6-octenal, 2-allyloxybenzaldehydes and 2-formylphenyt (E)-3-aryl-2-propenoates with base catalysis. The possibility of stereo- and regioselective cycloaddition was investigated. (c) 2008 Elsevier Ltd. All rights reserved.
A new domino-Knoevenagel–hetero-Diels–Alder reaction
作者:Vasyl S. Matiychuk、Roman B. Lesyk、Mykola D. Obushak、Andrzej Gzella、Dmytro V. Atamanyuk、Yuri V. Ostapiuk、Anna P. Kryshchyshyn
DOI:10.1016/j.tetlet.2008.05.062
日期:2008.7
Various novel 3,5a,6,11b-tetrahydro-2H,5H-chromeno[4',3':4,5]thiopyrano[2,3-d][1,3]thiazol-2-ones were synthesized in 60-80% yields via domi no-Knoevenagel-hetero-Diels-Alder reactions of 4-thioxo-1,3-thiazolidin-2-one with 3,7-dimethyl-6-octenal, 2-allyloxybenzaldehydes and 2-formylphenyt (E)-3-aryl-2-propenoates with base catalysis. The possibility of stereo- and regioselective cycloaddition was investigated. (c) 2008 Elsevier Ltd. All rights reserved.