Reductive Synthesis of Aminal Radicals for Carbon–Carbon Bond Formation
作者:David A. Schiedler、Yi Lu、Christopher M. Beaudry
DOI:10.1021/ol500024q
日期:2014.2.21
Aminal radicals were generated by reduction of the corresponding amidine or amidinium ion. The intermediate radicals participate in C–C bond-forming reactions to produce fully substituted aminal stereocenters. No toxic additives or reagents are required. More than 30 substrate combinations are reported, and chemical yields are as high as 99%.
The development of carbon–carbon bond forming reactions of aminal radicals
作者:David A. Schiedler、Jessica K. Vellucci、Yi Lu、Christopher M. Beaudry
DOI:10.1016/j.tet.2014.12.067
日期:2015.3
Aminal radicals were generated and used in synthetic reactions for the first time. Aminal radicals are formed from aminals by radical translocation using AIBN and a stoichiometric hydrogen atom donor, or by SmI2 reduction of N-acyl amidines or amidinium ions in the presence of a proton source. Aminal radicals were found to participate in inter- and intramolecular C–C bondformingreactions with electron
Spiessens, Luc I.; Antaunis, Marc J. O., Bulletin des Societes Chimiques Belges, 1984, vol. 93, # 3, p. 191 - 204
作者:Spiessens, Luc I.、Antaunis, Marc J. O.
DOI:——
日期:——
β-Lactams as building blocks in the synthesis of macrocyclic spermine and spermidine alkaloids
作者:Harry H Wasserman、Haruo Matsuyama、Ralph P Robinson
DOI:10.1016/s0040-4020(02)00731-7
日期:2002.8
Syntheses of the macrocyclicspermidinealkaloids (±)-celacinnine (1) and (±)-dihydroperiphylline (2) as well as the related spermine alkaloid (±)-verbascenine (3) were accomplished by means of sequential ring expansions of smaller lactam rings. Three ring expansion methods were employed: (1) transamidation of N-(aminoalkyl)lactams, (2) β-lactam-lactim ether condensation followed by reductive cleavage