4289-95-6Relevant articles and documents
Divergent Synthesis of Enantioenriched β-Functional Amines via Desymmetrization of meso-Aziridines with Isocyanides
Li, Xiangqiang,Xiong, Qian,Guan, Mingming,Dong, Shunxi,Liu, Xiaohua,Feng, Xiaoming
supporting information, p. 6096 - 6101 (2019/08/20)
A highly enantioselective ring-opening desymmetrization of meso-aziridines with isocyanides was achieved in the presence of a chiral N,N′-dioxide/Mg(OTf)2 complex. The in situ generated chiral 1,4-zwitterionic intermediates were successfully trapped by intramolecular oxygen- and carbon-based nucleophiles or exogenous H2O and TMSN3, enabling a collective synthesis of various chiral vicinal amino-oxazoles, spiroindolines, β-amino amides, and tetrazole derivative in moderate to high yields with excellent enantioselectivities.
The Role of the Amino Protecting Group during Parahydrogenation of Protected Dehydroamino Acids
Cerutti, Erika,Viale, Alessandra,Nervi, Carlo,Gobetto, Roberto,Aime, Silvio
, p. 11271 - 11279 (2015/12/01)
A series of dehydroamino acids endowed with different protective groups at the amino and carboxylate moieties and with different substituents at the double bond have been reacted with parahydrogen. The observed ParaHydrogen Induced Polarization (PHIP) effects in the 1H NMR spectra are strongly dependent on the amino protecting group. DFT calculations allowed us to establish a relationship between the structures of the reaction intermediates (whose energies depend on the amido substitution) and the observed PHIP patterns.
A new formylating reagent: N-(diethylcarbamoyl)-N-methoxyformamide
Akikusa,Mitsui,Sakamoto,Kikugawa
, p. 1058 - 1060 (2007/10/02)
A simple and efficient method for the direct chemoselective formylation of primary amines in the presence of alcohols or secondary amines using a new reagent, N-(diethylcarbamoyl)-N-methoxyformamide is described.
