A General Protocol for C−H Difluoromethylation of Carbon Acids with TMSCF
<sub>2</sub>
Br
作者:Qiqiang Xie、Ziyue Zhu、Lingchun Li、Chuanfa Ni、Jinbo Hu
DOI:10.1002/anie.201900763
日期:2019.5.6
efficient method for the selectiveC‐difluoromethylation of carbon acids with the reagent TMSCF2Br has been developed. A variety of structurally diverse sp3‐ and sp‐hybridized carbon nucleophiles, including esters, amides, fluorenes, terminal alkynes, β‐ketoesters, malonates, and other activated C−H nucleophiles, could be efficiently and selectively transformed into the corresponding C‐difluoromethylated
[EN] SYNTHETIC ROUTE TO PACTAMYCIN AND PACTAMYCIN ANALOGS<br/>[FR] VOIE DE SYNTHÈSE D'ANALOGUES DE LA PACTAMYCINE ET DE LA PACTAMYCINE
申请人:UNIV NORTH CAROLINA
公开号:WO2014116792A1
公开(公告)日:2014-07-31
Methods and intermediates useful for making compounds of Formula (I) are described, including a general method of making an alpha, beta-diamino ketone by reacting an imine with a 2-amino-substituted 1,3-dicarbonyl in a Mannich addition reaction to produce said alpha,beta-diamino ketone.
Synthesis of 9-biarylfluorenes by one-pot, three-step reactions of <i>N</i>-tosylhydrazones, <i>p</i>-bromobenzeneboronic acid, and arylboronic acids
作者:Jing He、Jie Zhang、Bin Dai、Ping Liu
DOI:10.1177/1747519819859801
日期:2019.7
A one-pot, three-step reaction of N-tosylhydrazones, p-bromobenzeneboronic acid, and arylboronic acids is established for the synthesis of 9-biarylfluorenes. Sequential formation of Csp3–Csp2 bond and Csp2–Csp2 bonds using readily available starting materials leads to the 9-biarylfluorene products in good yields. The present transformation features a broad substrate scope and good functional group
[EN] FLUOROGENIC COMPOUNDS, PROCESS OF PREPARATION THEREOF AND METHODS OF USE<br/>[FR] COMPOSÉS FLUOROGÈNES, LEUR PROCÉDÉ DE PRÉPARATION ET MÉTHODES D'UTILISATION
申请人:UNIV COURT UNIV OF EDINBURGH
公开号:WO2016207626A1
公开(公告)日:2016-12-29
The invention relates to compounds, particularly fluorogenic amino acid derivatives, which can be used as optical probes. The invention further relates to processes for the preparation of such compounds, the use of such compounds as probes and methods of detecting a target using such compounds as probes.