A 4+3 Cycloaddition Approach to the Synthesis of (±)-Sterpurene
作者:Michael Harmata、Gary J. Bohnert
DOI:10.1021/ol027176l
日期:2003.1.1
A synthesis of the sesquiterpene sterpurene is presented. Key steps include a 4+3cycloaddition reaction and a quasi-Favorskii rearrangement. [reaction--see text]
Regiodivergent (3 + 2) annulation reactions of oxyallyl cations
作者:Zachary Protich、Leah L. Lowder、Russell P. Hughes、Jimmy Wu
DOI:10.1039/d2sc06999g
日期:——
We report a new method for the regiodivergent dearomative (3 + 2) reaction between 3-substituted indoles and oxyallyl cations. Access to both regioisomeric products is possible and is contingent on the presence or absence of a bromine atom on the substituted oxyallyl cation. In this way, we are able to prepare molecules that contain highly-hindered, stereodefined, vicinal, quaternary centers. Detailed
Dihalo-Substituted Cyclopentanones: Synthetic Equivalents of Cyclobutenes in Diels-Alder Reactions
作者:Michael Harmata
DOI:10.1055/s-1999-3657
日期:1999.8
Bora, Utpal; Saikia, Anil; Boruah, Romesh C., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2005, vol. 44, # 12, p. 2523 - 2526
作者:Bora, Utpal、Saikia, Anil、Boruah, Romesh C.
DOI:——
日期:——
The [4 + 3]-Cycloaddition/Quasi-Favorskii Process. Synthesis of the Carbocyclic Core of Tricycloclavulone
作者:Michael Harmata、Sumrit Wacharasindhu
DOI:10.1021/ol050598l
日期:2005.6.1
The [4 + 3]-cycloadduct derived from the reaction of 2,5-dibromocyclopentanone with cyclopentadiene was converted via a quasi-Favorskii rearrangement and ring-opening, ring-closing metathesis sequence to the carbocyclic core of the prostanoid tricycloclavulone.