Ir-Catalyzed C–H Amidation Using Carbamoyl Azides for the Syntheses of Unsymmetrical Ureas
作者:Kwangho Yoo、Jooyeon Lee、Myung Hwan Park、Youngjo Kim、Hyun Jin Kim、Min Kim
DOI:10.1021/acs.joc.0c00659
日期:2020.5.1
An iridium-catalyzed C-H amidation for the syntheses of unsymmetrical urea was developed using carbamoyl azides (R(R')N-C(O)-N3) as the nitrogen source. A combination of iridium and silver gave an active catalyst for C-N bond formation. A variety of urea derivatives were synthesized using carbamoyl azides with only dinitrogen byproducts. Finally, the use of the transientdirectinggroupstrategy with
[EN] OLIGONUCLEOTIDE COMPOSITIONS AND METHODS THEREOF<br/>[FR] COMPOSITIONS D'OLIGONUCLÉOTIDES ET PROCÉDÉS ASSOCIÉS
申请人:WAVE LIFE SCIENCES LTD
公开号:WO2021237223A1
公开(公告)日:2021-11-25
The present disclosure provides modified oligonucleotides and compositions and methods thereof. In some embodiments, provided technologies comprise modified sugars and/or modified internucleotidic linkages. In some embodiments, the present disclosure provides technologies for preparing modified oligonucleotides. In some embodiments, the present disclosure provides chirally controlled oligonucleotide compositions and methods for their preparation and uses.