SYNTHESIS OF YNAMIDES BY N-ALKYNYLATION OF AMINE DERIVATIVES. PREPARATION OF N-ALLYL-N-(METHOXYCARBONYL)-1,3-DECADIYNYLAMINE
作者:Kohnen, Amanda L.、Dunetz, Joshua R.、Danheiser, Rick L.、Denmark, Scott E.、Liu, Xiaorong
DOI:10.15227/orgsyn.084.0088
日期:——
[2+2] Cycloaddition of ketenes with ynamides. A general method for the synthesis of 3-aminocyclobutenone derivatives
作者:Amanda L. Kohnen、Xiao Yin Mak、Tin Yiu Lam、Joshua R. Dunetz、Rick L. Danheiser
DOI:10.1016/j.tet.2005.11.088
日期:2006.4
Ynamides react with ketenes in [2+2] cycloadditions leading to a variety of substituted 3-aminocyclobut-2-en-1-ones. The ynamides employed in these reactions are readily available via the copper-promoted N-alkynylation of carbamates and sulfonamides with alkynyl bromides and iodides. The scope of the [2+2] cycloaddition with regard to both the ketene and ynamide component is described.