58777-87-0Relevant articles and documents
Design and Scalable Synthesis of N-Alkylhydroxylamine Reagents for the Direct Iron-Catalyzed Installation of Medicinally Relevant Amines**
Delcaillau, Tristan,Falk, Eric,Gürtler, Laura,Makai, Szabolcs,Morandi, Bill
supporting information, p. 21064 - 21071 (2020/09/21)
Secondary and tertiary alkylamines are privileged substance classes that are often found in pharmaceuticals and other biologically active small molecules. Herein, we report their direct synthesis from alkenes through an aminative difunctionalization reaction enabled by iron catalysis. A family of ten novel hydroxylamine-derived aminating reagents were designed for the installation of several medicinally relevant amine groups, such as methylamine, morpholine and piperazine, through the aminochlorination of alkenes. The method has excellent functional group tolerance and a broad scope of alkenes was converted to the corresponding products, including several drug-like molecules. Besides aminochlorination, the installation of other functionalities through aminoazidation, aminohydroxylation and even intramolecular carboamination reactions, was demonstrated, further highlighting the broad potential of these new reagents for the discovery of novel amination reactions.
α-Aminated methyllithium by DTBB-catalysed lithiation of a N- (chloromethyl) carbamate
Ortiz, Javier,Guijarro, Albert,Yus, Miguel
, p. 4831 - 4842 (2007/10/03)
The reaction of O-tert-butyl-N-(chloromethyl)-N-methyl carbamate (1) with lithium powder and a catalytic amount of 4,4'-di-tert-butylbiphenyl (DTBB, 2.5 mol %) in the presence of different electrophiles [Me3SiCl, (i)BuCHO, (t)BuCHO, PhCHO, 4-MeOC6H4CHO, (CH2)4CO, MeCO(n)Pr, Et2CO, MeCO(CH2)2CH=CH2, PhCOMe, PhCO(n)Bu, Ph2CO] in THF at -78°C leads, after hydrolysis with water, to the expected functionalised carbamates 2. Carbamates 2 derived from carbonyl compounds are deprotected with hydrogen chloride (for aromatic aldehyde or ketone derivatives) or with a mixture of phenol and trimethylsilyl chloride (for aliphatic aldehyde derivatives) giving substituted 1,2-diols 4.