Direct Amidation of N-Boc- and N-Cbz-Protected Amines via Rhodium-Catalyzed Coupling of Arylboroxines and Carbamates
摘要:
N-Boc- and N-Cbz-protected amines are directly converted into amides by a novel rhodium-catalyzed coupling of arylboroxines and carbamates, replacing the traditional two-step deprotection-condensation sequence. Both protected anilines and aliphatic amines are efficiently transformed into a wide variety of secondary benzamides, including sterically hindered and electron-deficient amides, as well as in the presence of acid-labile and reducible functional groups.
COMPOUNDS AND METHODS FOR TREATING RESPIRATORY DISEASES
申请人:Ghosh Arun K.
公开号:US20110269834A1
公开(公告)日:2011-11-03
Described herein are compounds and compositions, and methods for using the compounds and compositions, for treating respiratory diseases and illness, such as severe acute respiratory syndrome (SARS).
Microwave-Enhanced Asymmetric Transfer Hydrogenation of<i>N</i>-(<i>tert</i>-Butylsulfinyl)imines
作者:Óscar Pablo、David Guijarro、Miguel Yus
DOI:10.1002/ejoc.201402884
日期:2014.11
This work was generously supported by the Spanish Ministerio de Ciencia e Innovacion (MICINN) (grant numbers CONSOLIDER INGENIO 2010, CSD2007-00006, CTQ2007-65218 and CTQ2011-24151) and the Generalitat Valenciana (PROMETEO/2009/039 and FEDER). O. P. thanks the Spanish Ministerio de Educacion for a predoctoral fellowship (grant number AP-2008-00989).
Organocatalytic asymmetric biomimetic transamination of aromatic ketone to optically active amine
作者:Ying Xie、Hongjie Pan、Xiao Xiao、Songlei Li、Yian Shi
DOI:10.1039/c2ob26782a
日期:——
An asymmetric biomimetic transamination of aromatic ketones to opticallyactive amines with o-HOPhCH2NH2 as amine source catalyzed by hydroquinine-derived chiral base is described. Up to 85% ee was obtained.
Asymmetric Synthesis of Chiral Primary Amines by Transfer Hydrogenation of <i>N</i>-(<i>tert</i>-Butanesulfinyl)ketimines
作者:David Guijarro、Óscar Pablo、Miguel Yus
DOI:10.1021/jo101057s
日期:2010.8.6
The diastereoselective reduction of (R)-N-(tert-butanesulfinyl)ketimines by a ruthenium-catalyzed asymmetrictransferhydrogenation process in isopropyl alcohol, followed by desulfinylation of the nitrogen atom, is an excellent method to prepare highly enantiomerically enriched α-branched primary amines (up to >99% ee) in short reaction times (1−4 h). (1S,2R)-1-Amino-2-indanol has been shown to be
non-enzymatic kinetic resolution of primaryamines via enantioselective N-acylation with acyl chlorides was accomplished for the first time by using the selective sequestration of one enantiomer within a supramolecular cyclodextrin (CD) nanocapsule in nonpolar solvents. In addition, the first example of a crystalline structure for an inclusion complex between an acyl chloride and a CD derivative is reported