Selectivity in cycloadditions to vinylheterocumulenes. [2 + 2] and [4 + 2

Competitive [6+ 2],[4+ 2], and [2+ 2] cycloadditions. Experimental

Experimental classification of two-electron cycloaddends. Lawrence T. ... Journal of the American Chemical Society 1999 121 (49), 11531-11537. Abstract | Full ...

Intramolecular Ketenimineâ Ketenimine [2+ 2] and [4+ 2] Cycloadditions

Jun 21, 2007 - Bis(ketenimines), in which the two heterocumulenic functions are placed in close proximity on a carbon skeleton to allow their mutual ...

The [2 + 2] and [2 + 4] cycloadditions of ... - ACS Publications

William R. Dolbier Jr., Mark Seabury, Daniel Daly, and Bruce E. Smart. J. Org. Chem. , 1986, 51 (7), pp 974â979. DOI: 10.1021/jo00357a004. Publication Date: ...


Espinardo, 30100 Murcia, Spain [email protected]. ReceiVed March 6, 2007. Bis(ketenimines), in which the two heterocumulenic functions are placed in close ...


Jun 21, 2007 - [4 + 2] Cycloaddition Reaction of C-Aryl Ketenimines with PTAD as a ... retro-Cheletropic ene reactions with 2-carbena-1,3-dioxolane as ...

[2+2] Cycloadditions Involving 2

Apr 11, 2018 - ... in good yields with excellent diastereoselectivities. This finding demonstrated the unique synthetic utility of the 2-alkenylindolenine species in ...


1 hour ago - A stereoselective sequential [4+2]/[2+2] cycloaddition process involving 2-alkenylindolenines has been developed. This unprecedented protocol allows rapid access to densely functionalized benzo[b]indolizidines containing a fully substitu


5 days ago - Among various benzoindolizidine structures resulting from the position difference of the fused benzene ring, the benzo[b]indolizidine member is ... (3) In addition, Ye and co-workers documented an interesting formal aza-DielsâAlder rea

Palladium-Catalyzed [2+ 2+ 2] Cycloadditions of 3, 4

Sep 17, 2008 - Carmen Romero, Diego Pen˜a,* Dolores Pérez,* and Enrique Guitián. Departamento de Quımica Orgánica, UniVersidad de Santiago de ...

Palladium-Catalyzed [2+ 2+ 2] Cycloadditions of 3, 4

J. Org. Chem. , 2008, 73 (20), pp 7996â8000. DOI: 10.1021/jo8013947. Publication Date (Web): September 17, 2008. Copyright Â© 2008 American Chemical ...

Selectivity in cycloadditions to vinylheterocumulenes. [2 + 2] and [4 + 2

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