A new, chiral aminoanthracene for the Diels–Alder/retro-Diels–Alder sequence in lactam and butenolide synthesis
摘要:
9-(2-Phenylethyl)aminoanthracene has been prepared and used as a template in the Diels-Alder/retro-Diels-Alder sequence to produce alpha,beta-butenolides and alpha,beta-unsaturated lactams. In this sequence the aminoanthracene serves as a stereo- and regiocontrolling chaperone in guiding maleic anhydride or N-alkylmaleimides through transformations to the butenolide or lactam targets. (c) 2005 Elsevier Ltd. All rights reserved.
A new, chiral aminoanthracene for the Diels–Alder/retro-Diels–Alder sequence in lactam and butenolide synthesis
摘要:
9-(2-Phenylethyl)aminoanthracene has been prepared and used as a template in the Diels-Alder/retro-Diels-Alder sequence to produce alpha,beta-butenolides and alpha,beta-unsaturated lactams. In this sequence the aminoanthracene serves as a stereo- and regiocontrolling chaperone in guiding maleic anhydride or N-alkylmaleimides through transformations to the butenolide or lactam targets. (c) 2005 Elsevier Ltd. All rights reserved.
Asymmetric control in Diels–Alder cycloadditions of chiral 9-aminoanthracenes by relay of stereochemical information
作者:Harry Adams、Ramadan A. Bawa、Keith G. McMillan、Simon Jones
DOI:10.1016/j.tetasy.2007.04.012
日期:2007.5
cycloadditions with N-methyl maleimide and maleicanhydride. Excellent reactivity was achieved with good levels of diastereoselectivity, through a favourable combination of electrostatic and hydrogen bonding effects. Trial studies of the retro Diels–Alder reaction of these cycloadducts were also performed.