Experimental and theoretical studies of the [3,3]-sigmatropic rearrangement of prenyl azides
作者:Exequiel O. J. Porta、Margarita M. Vallejos、Andrea B. J. Bracca、Guillermo R. Labadie
DOI:10.1039/c7ra09759j
日期:——
[3,3]-Sigmatropic rearrangement of isoprenyl azides has been extensively investigated in an experimental and theoretical level. Prenylazides with different chain lengths and phenyl prenylazide have been synthesized. NMR analysis of each azide has been made to determine the equilibrium composition, showing the predominance of primary allyl azides over the tertiary ones and E over Z isomer, regardless
异戊二烯叠氮化物的[3,3]-正向重排已在实验和理论水平上进行了广泛的研究。已经合成了具有不同链长的异戊烯叠氮化物和苯基异戊烯叠氮化物。已对每种叠氮化物进行了NMR分析以确定平衡组成,表明伯烯丙基叠氮化物在叔丁基叠氮化物中占优势,E在Z之上占优势。异构体,无论链长,温度,溶剂或异戊二烯前体醇的区域化学如何。已确定苯基异戊烯叠氮化物没有经历[3,3]-σ重排。为了合理化实验结果并深入了解异戊二烯叠氮化物的[3,3]-σ重排机理,使用密度泛函理论和QTAIM方法进行了理论研究。