8-Azabicyclo[3.2.1]oct-3-en-2-ones via asymmetric 1,3-dipolar cycloaddition of a homochiral 3-oxidopyridinium betaine
摘要:
8-Azabicyclo[3.2.1]oct-3-en-2-ones were prepared by asymmetric 1,3-dipolar cycloadditions of homochiral pyridinium betaine 4. Excellent diastereofacial selectivity was achieved for the major 6-exo cycloadducts. The absolute stereochemistry of cycloadduct 7 was confirmed by a single-crystal X-ray diffraction study. (c) 2006 Elsevier Ltd. All rights reserved.
8-Azabicyclo[3.2.1]oct-3-en-2-ones via asymmetric 1,3-dipolar cycloaddition of a homochiral 3-oxidopyridinium betaine
摘要:
8-Azabicyclo[3.2.1]oct-3-en-2-ones were prepared by asymmetric 1,3-dipolar cycloadditions of homochiral pyridinium betaine 4. Excellent diastereofacial selectivity was achieved for the major 6-exo cycloadducts. The absolute stereochemistry of cycloadduct 7 was confirmed by a single-crystal X-ray diffraction study. (c) 2006 Elsevier Ltd. All rights reserved.
8-Azabicyclo[3.2.1]oct-3-en-2-ones via asymmetric 1,3-dipolar cycloaddition of a homochiral 3-oxidopyridinium betaine
作者:Neil R. Curtis、Richard G. Ball、Janusz J. Kulagowski
DOI:10.1016/j.tetlet.2006.02.005
日期:2006.4
8-Azabicyclo[3.2.1]oct-3-en-2-ones were prepared by asymmetric 1,3-dipolar cycloadditions of homochiral pyridinium betaine 4. Excellent diastereofacial selectivity was achieved for the major 6-exo cycloadducts. The absolute stereochemistry of cycloadduct 7 was confirmed by a single-crystal X-ray diffraction study. (c) 2006 Elsevier Ltd. All rights reserved.