Aspects of the intramolecular Diels-Alder reactions of some 1,3,9-trienic amides, amines, and esters. An approach to the pentacyclic skeleton of the yohimboid alkaloids
Aspects of the intramolecular Diels-Alder reactions of some 1,3,9-trienic amides, amines, and esters. An approach to the pentacyclic skeleton of the yohimboid alkaloids
Intramolecular Titanium-Mediated Aminocyclopropanation of Terminal Alkenes: Easy Access to Various Substituted Azabicyclo[<i>n</i>.1.0]alkanes<sup>1</sup>
作者:Gerd-Dieter Tebben、Karsten Rauch、Christian Stratmann、Craig M. Williams、Armin de Meijere
DOI:10.1021/ol027352q
日期:2003.2.1
[reaction: see text] A variety of substituted azabicyclo[n.1.0]alkanes were synthesized by intramolecular titanium-mediated cyclopropanation of N-benzyl-N-(2-alkylalk-3-enyl)formamides and N-benzyl-N-alkadienylformamides. N-Benzylpyrroline upon treatment with Grignard reagents undergoes a titanium-mediated carbomagnesiation to yield N-benzyl-N-(2-alkylbut-3-enyl)amines.
Construction of the tricyclic ABC ring subunit of manzamine A via a novel intramolecular Diels-Alder reaction
作者:Stephen F. Martin、Tobias Rein、Yusheng Liao
DOI:10.1016/0040-4039(91)80198-f
日期:1991.11
A novel entry to the manzamine A (1) has been designed that features an intramolecularDiels-Alderreaction of a vinylogous imide for the facile construction of the tricyclic core of 1 as illustrated by the conversions 8 and 16 → 9.
Mechanism of intramolecular photocycloadditions of cyclooctenones
作者:Michael C. Pirrung、Nicholas J. G. Webster
DOI:10.1021/jo00392a020
日期:1987.8
Alkenyltrialkylammonium salts as dienophiles in Diels-Alder reactions: preparation, cycloadditions, and further reactions. .beta.-(Dimethylamino)acrylonitrile equivalent in cycloadditions