Remote, Late-Stage Oxidation of Aliphatic C–H Bonds in Amide-Containing Molecules
作者:Takeshi Nanjo、Emilio C. de Lucca、M. Christina White
DOI:10.1021/jacs.7b07665
日期:2017.10.18
systematic study of the main features that makes remote oxidations of amides in peptide settings possible, we developed an imidate salt protecting strategy that employs methyl trifluoromethanesulfonate as a reversible alkylating agent. The imidate salt strategy enables, for the first time, remote, nondirected, site-selective C(sp3)-H oxidation with Fe(PDP) and Fe(CF3PDP) catalysis in the presence of a broad
Synthesis of new chiral schiff bases from (+)-3-carene and their use in asymmetric oxidation of sulfides catalyzed by metal complexes
作者:E. A. Koneva、K. P. Volcho、D. V. Korchagina、N. F. Salakhutdinov、A. G. Tolstikov
DOI:10.1134/s1070428009060037
日期:2009.6
A number of new chiral Schiff bases were synthesized starting from accessible monoterpene (+)-3-carene, and the products were used as ligands in metal complex-catalyzed oxidation of sulfides to chiral sulfoxides. The optical purity and the sign of optical rotation of chiral sulfoxides were found to strongly depend on the oxidation temperature.
Addition products of chlorosulfonylisocyanate to (+)-3-carene and α-pinene enantiomers
作者:F. Z. Makaev、L. A. Vlad、L. P. Bets、S. T. Malinovskii、K. N. Gavrilov、M. Gdanets
DOI:10.1007/s10600-010-9669-3
日期:2010.9
Optically active lactams were synthesized from (+)-3-carene and α-pinene enantiomers. Their properties and structures were characterized. A pathway for preparing their trifluoroacetate salts was demonstrated.
Synthesis and transformation of novel cyclic β-amino acid derivatives from (+)-3-carene
作者:Szilvia Gyónfalvi、Zsolt Szakonyi、Ferenc Fülöp
DOI:10.1016/j.tetasy.2003.10.001
日期:2003.12
The regio- and stereoselective addition of chlorosulfonyl isocyanate to (+)-3-carene 1 resulted in β-lactam 2, which was converted to N-Boc-β-amino acid 4, β-amino ester 7, and carboxamide derivatives 18 and 20 via N-Boc activation and mild ring opening. The corresponding β-amino ester 7 was transformed to 2-thioxopyrimidin-4-one 11 and 2,4-pyrimidinedione 13. LAH reduction of 5 and 7 resulted in amino