N -Cbz-和Boc-保护的螺环二烯通过环戊二烯的二烷基化制备。这些二烯在一系列亚氨基亚硝基 Diels-Alder 反应中有效偶联,以产生一系列新的螺环加合物。这些加合物的氢解提供了新的螺环,其中包含用于进一步功能化的多个手柄。此外,螺环加合物的立体控制二羟基化和还原裂解为新型螺环碳环核苷类似物的合成和衍生化提供了多功能支架。
N -Cbz-和Boc-保护的螺环二烯通过环戊二烯的二烷基化制备。这些二烯在一系列亚氨基亚硝基 Diels-Alder 反应中有效偶联,以产生一系列新的螺环加合物。这些加合物的氢解提供了新的螺环,其中包含用于进一步功能化的多个手柄。此外,螺环加合物的立体控制二羟基化和还原裂解为新型螺环碳环核苷类似物的合成和衍生化提供了多功能支架。
A highly efficient enantioselective Nitroso Diels-Alderreactions of 6-methyl-2-nitroso pyridine with various 1,3-dienes were successfully developed with Cu(I)/(S)-TF-BiphamPhos complex as the catalyst. For most of the cyclic dienes, the synthetically...
Retro iminonitroso Diels–Alder reactions: interconversion of nitroso cycloadducts
作者:Baiyuan Yang、Weimin Lin、Viktor Krchnak、Marvin J. Miller
DOI:10.1016/j.tetlet.2009.07.121
日期:2009.10
Retro iminonitroso Diels-Alder reactions were investigated in both solution and solid phase. In thermal or Cu(I)-mediated reactions, interconversion of various nitroso cycloadducts occurred in the presence of separate dienes. Up to 99% of conversion was observed. Use of chiral ligands in the Cu(I)-mediated reactions gave new cycloadducts enantioselectively. (C) 2009 Elsevier Ltd. All rights reserved.