Regiodivergent Synthesis of 1- and 2-Arylsulfonyl 1,3-Dienes
作者:Carissa S. Hampton、Michael Harmata
DOI:10.1021/ol500259m
日期:2014.2.21
In the course of a study of the alkoxyallylation of allenic sulfones through the use of π-allylpalladium chemistry, we discovered an isomerization of allenic sulfones to arylsulfonyl 1,3-dienes. Under conditions of palladium catalysis in the presence of acids such as acetic acid, allenic sulfones are converted to 1-arylsulfonyl 1,3-dienes. On the other hand, nucleophilic catalysis using triphenylphosphine
Two Syntheses of (−)-Kainic Acid via Highly Stereoselective Zinc-ene Cyclizations
作者:Justin M. Chalker、Ao Yang、Kai Deng、Theodore Cohen
DOI:10.1021/ol701733u
日期:2007.9.1
Two concise, high-yielding syntheses of enantioenriched (-)-kainic acid are presented. Both routes feature a Pd-catalyzed Zn-ene cyclization that proceeds with complete diastereoselectivity. The key step can be carried out on a multigram scale, and the overall yields are among the highest to date for this marine alkaloid.
Palladium-Catalyzed Regioselective Addition of Thiophenol to Conjugated Enynes. Efficient Syntheses of 2-(Phenylsulfinyl) and 2-(Phenylsulfonyl) 1,3-Dienes
作者:Jan-E. Baeckvall、Anna Ericsson
DOI:10.1021/jo00099a003
日期:1994.10
Selective cross Diels-Alder reactions of 2-(phenylsulfonyl) 1,3-dienes
作者:Ta Shue Chou、Su Chun Hung
DOI:10.1021/jo00248a022
日期:1988.6
Iridium-Catalyzed [3 + 2] Annulation of Cyclic <i>N</i>-Sulfonyl Ketimines with 1,3-Dienes via C–H Activation
作者:Takahiro Nishimura、Yusuke Ebe、Tamio Hayashi
DOI:10.1021/ja311968d
日期:2013.2.13
Ir-catalyzed [3 + 2] annulation of cyclic N-sulfonyl ketimines with 1,3-dienes, in which an aryliridium intermediate is formed via C-H activation, gives amino-indane derivatives in high yields with high regio- and diastereoselectivity.