DABCO-catalyzed reaction of allenic esters and ketones with salicyl N-tosylimines: synthesis of highly functionalized chromenes

Yong-Ling Shi; Min Shi

doi:10.1021/ol051044l

DABCO-catalyzed reaction of allenic esters and ketones with salicyl N-tosylimines: synthesis of highly functionalized chromenes

Org Lett. 2005 Jul 7;7(14):3057-60. doi: 10.1021/ol051044l.

Authors

Yong-Ling Shi¹, Min Shi

Affiliation

¹ State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences.

PMID: 15987204
DOI: 10.1021/ol051044l

Abstract

[reaction: see text] DABCO-catalyzed reactions of salicyl N-tosylimines with ethyl 2,3-butadienoate and penta-3,4-dien-2-one proceed smoothly at room temperature in dichloromethane to give the corresponding chromenes in good to excellent yields.