Gold(I)-Catalyzed Highly Regio- and Stereoselective Decarboxylative Amination of Allylic <i>N</i>-Tosylcarbamates via Base-Induced Aza-Claisen Rearrangement in Water
作者:Dong Xing、Dan Yang
DOI:10.1021/ol100056f
日期:2010.3.5
A gold(I)-catalyzed decarboxylative amination of allylic N-tosylcarbamates via base-induced aza-Claisen rearrangement has been developed. A variety of substituted N-tosyl allylic amines were obtained in good yield, excellent regioselectivity, and high to excellent stereoselectivity. This transformation could be performed either in H2O or in one pot directly from allylic alcohols and therefore represents
Amidation of Saturated C−H Bonds Catalyzed by Electron-Deficient Ruthenium and Manganese Porphyrins. A Highly Catalytic Nitrogen Atom Transfer Process
作者:Xiao-Qi Yu、Jie-Sheng Huang、Xiang-Ge Zhou、Chi-Ming Che
DOI:10.1021/ol000107r
日期:2000.7.1
Amidation of a variety of hydrocarbons with PhI=NTs catalyzed by ruthenium and manganese meso-tetrakis(pentafluorophenyl)porphyrins 1 and 2 afforded N-substituted amides in up to 92% yields with good to excellent substrate conversions. By employing catalyst 2, exceptionally high turnovers (up to 2600) were achieved, and the amidations can be effected by directly using PhI(OAc)(2)/NH(2)R as amidating
Regio- and stereoselectivity in reactions of 2,3-cis- and trans-3-alkyl-2-vinylaziridines with organocopper reagents: Importance of 2,3-cis-stereochemistry in controlling selectivity
By treatment with organocopperreagents, N-activated 2,3-cis-3-alkyl-2-vinylaziridines produced exclusively (E)-allyl amines in high yields, presumably via an anti-SN2′ reaction pathway. On the other hand, under otherwise identical conditions, N-activated 2,3-trans-3-alkyl-2-vinylaziridines gave an 85-96:15-4 mixture of (E)- and (Z)-allyl amines. In reactions of certain N-activated2,3-trans-3-alkyl-2-vinylaziridines
通过用有机铜试剂处理,N-活化的2,3-顺-3-烷基-2-乙烯基氮丙啶类化合物可能通过反-S N 2'反应途径以高收率专门生产了(E)-烯丙基胺。另一方面,在其他相同条件下,N-活化的2,3-反式-3-烷基-2-乙烯基氮丙啶给出了(E)-和(Z)-烯丙基胺的85-96:15-4混合物。在某些经N活化的2,3-反式-3-烷基-2-乙烯基氮丙啶的反应中,仅以2-3%的产率获得了N 2反应产物。
Palladium-Catalyzed[3,3] Sigmatropic Rearrangement of (Allyloxy)iminodiazaphospholidines: Allylic Transposition of CO and CN Functionality
作者:Ernest E. Lee、Robert A. Batey
DOI:10.1002/anie.200353284
日期:2004.3.26
Allylic amination of alkenes by tosyliminoiodobenzene: manganese porphyrins as suitable catalysts