Iridium-Catalyzed, β-Selective C(sp<sup>3</sup>)–H Silylation of Aliphatic Amines To Form Silapyrrolidines and 1,2-Amino Alcohols
作者:Bo Su、Taegyo Lee、John F. Hartwig
DOI:10.1021/jacs.8b10428
日期:2018.12.26
reagents and catalysts. The functionalization of C-Hbonds β to the nitrogen of aliphatic amines to form prevalent 1,2-amino functionalized structures is particularly challenging because the C-H bond β to nitrogen is stronger than the C-H bond α to nitrogen, and the nitrogen in the amine or its derivatives usually directs a catalyst to react at more distal γ- and δ-C-H bonds to form 5- or 6-membered metallacyclic
A simple method of preparation of 7-alkyl-7-azabicyclo[2.2.1]heptanes
作者:Alfred Hassner、Anatoly M. Belostotskii
DOI:10.1016/0040-4039(95)00051-d
日期:1995.3
Action of triphenylphosphine - carbon tetrachloride on the trans-4-alkylaminocyclohexanols leads to 7-alkyl-7-azabicyclo[2.2.1]heptanes in the good yields. The starting aminoalcohols are easily available from the monoethylene ketal of 1,4-cyclohexanedione and primary amines in a four step process without isolation of intermediates.
Synthesis of Normorphans through an Efficient Intramolecular Carbamoylation of Ketones
作者:Faïza Diaba、Juan A. Montiel、Georgeta Serban、Josep Bonjoch
DOI:10.1021/acs.orglett.5b01832
日期:2015.8.7
haloform-type reaction of trichloroacetamides promoted by enamines (generated in situ from ketones) as counter-reagents. The methodology was applied to the synthesis of compounds embodying the 6-azabicyclo[3.2.1]octane framework.