Fluorocyclization of N-Propargylamides to Oxazoles by Electrochemically Generated ArIF2
摘要:
A sustainable synthesis of 5-fluoromethyl-2-oxazoles by use of electrochemistry has been demonstrated. Hypervalent ArIF2 is generated by direct electrochemical oxidation of iodoarene ArI in Et3N center dot 5HF and mediates the fluorocyclization of N-propargylamides to 5-fluoromethyl-2-oxazoles. The stoichiometry in ArI turned out to be a key parameter in controlling the product selectivity. This electrochemical protocol provides access to fluorinated oxazoles starting from simply available N-propargylamides with yields up to 65% and offers a green alternative over conventional reagent-based approaches.
It has been established that a cationic rhodium(I)/H8–BINAP complex catalyzes the asymmetric [2 + 2 + 2] cycloaddition of 1,6-enynes with cyclopropylideneacetamides to produce spirocyclohexenes in excellent enantioselectivity with retaining cyclopropane rings.
现已确定,阳离子铑(I)/ H 8 -BINAP配合物可催化1,6-炔烃与环亚丙基乙酰胺的不对称[2 + 2 + 2]环加成反应,生成具有优异对映选择性并保留环丙烷环的螺环己烯。
[EN] THERAPEUTIC COMBINATIONS OF A BTK INHIBITOR, A PI3K INHIBITOR, A JAK-2 INHIBITOR, AND/OR A BCL-2 INHIBITOR<br/>[FR] COMBINAISONS THÉRAPEUTIQUES D'UN INHIBITEUR DE BTK, D'UN INHIBITEUR DE PI3K, D'UN INHIBITEUR DE JAK-2, ET/OU D'UN INHIBITEUR DE BCL-2
申请人:ACERTA PHARMA BV
公开号:WO2016024230A1
公开(公告)日:2016-02-18
Therapeutic combinations of a phosphoinositide 3-kinase (PI3K) inhibitor, including PI3K inhibitors selective for the γ- and δ-isoforms and selective for both γ- and δ-isoforms (PI3K-γ,δ, PI3K-γ, and PI3K-δ), a Janus kinase-2 (JAK-2) inhibitor, a Bruton's tyrosine kinase (BTK) inhibitor, and/or a B-cell lymphoma-2 (BCL-2) inhibitor are described. In some embodiments, the invention provides therapeutic combinations of a PI3K-δ inhibitor and a BTK inhibitor, a JAK-2 and a BTK inhibitor, and a BCL-2 and BTK inhibitor.
作者:A. Stephen K. Hashmi、Christian Lothschütz、Katharina Graf、Tobias Häffner、Andreas Schuster、Frank Rominger
DOI:10.1002/adsc.201100183
日期:2011.6
A new, one‐step route to N‐heterocyclic oxo‐carbene complexes (NHOCs), representatives of chemo‐switchable NHC complexes, is reported. This simple procedure provides an easy access to gold, palladium and platinum complexes of these ligands.
Gold-Catalyzed Cyclization of Nonterminal Propargylic Amides to Substituted Alkylideneoxazolines and -oxazines
作者:A. Stephen K. Hashmi、Andreas M. Schuster、Martin Schmuck、Frank Rominger
DOI:10.1002/ejoc.201100342
日期:2011.8
The substrate scope of the gold-catalyzedcyclization of nonterminal propargylic amides to oxazolines and oxazines was investigated. Sixteen alkyl-substituted and 35 aryl-substited substrates were prepared by a very variable route from trimethylsilyl-(TMS-)protected, nonterminal propargylamines. Steric and electronic influences of the substituents on product selectivity were studied. A chloromethyl
Gold Catalysis: Isolation of Vinylgold Complexes Derived from Alkynes
作者:A. Stephen K. Hashmi、Andreas M. Schuster、Frank Rominger
DOI:10.1002/anie.200903134
日期:2009.10.19
Gold plated rings: N‐Propargylcarboxamides (1) when reacted with a goldcomplex containing the IPr N‐heterocyclic carbene ligand, delivers the first isolable vinylgold intermediates obtained fromalkynes. [see Scheme; IPr=1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylide]