[EN] ALLOSTERIC CHROMENONE INHIBITORS OF PHOSPHOINOSITIDE 3-KINASE (PI3K) FOR THE TREATMENT OF DISEASES ASSOCIATED WITH P13K MODULATION [FR] INHIBITEURS CHROMÉNONE ALLOSTÉRIQUES DE LA PHOSPHOINOSITIDE 3-KINASE (PI3K) POUR LE TRAITEMENT DE MALADIES ASSOCIÉES À LA MODULATION DE PI3K
Synthesis of 1-tert-Butyl-4-chloropiperidine: Generation of an N-tert-Butyl Group by the Reaction of a Dimethyliminium Salt with Methylmagnesium Chloride
摘要:
Two efficient routes to 1-tert-butyl-4-chloropiperidine are described. In the first route, the key thionyl chloride mediated chlorination reaction features the use of tetrabutylammonium chloride as an additive that effectively suppresses the formation of an elimination-derived side product. In the second route, a novel alternative synthesis of 1-tert-butyl-4-chloropiperidine was developed in which the tertiary butyl group on the nitrogen is efficiently generated through the addition of methylmagnesium chloride to a dimeth-yliminium salt in 71% overall yield.
A sensitive amine-responsive disassembly of self-assembled AuI -CuI double salts was observed and its utilization for the synergistic catalysis was enlightened. Investigation of the disassembly of [Au(NHC)2 ][CuI2 ] revealed the contribution of Cu-assisted ligand exchange of N-heterocyclic carbene (NHC) by amine in [Au(NHC)2 ]+ and the capacity of [CuI2 ]- on the oxidative step. By integrating the
Sustainable Route Toward
<i>N</i>
‐Boc Amines: AuCl
<sub>3</sub>
/CuI‐Catalyzed
<i>N</i>
‐
<i>tert</i>
‐butyloxycarbonylation of Amines at Room Temperature
作者:Yanwei Cao、Yang Huang、Lin He
DOI:10.1002/cssc.202102400
日期:2022.2.18
Boc-kle up: An atom-economic synthesis of N-tert-butoxycarbonyl (N-Boc) amines from amines, t-butanol, and CO is reported at room temperature with commercially available AuCl3/CuI as catalysts. Gram-scale preparation of medicinally important N-Boc amine intermediates is achieved, which demonstrates a potential application prospect in industrial syntheses.
Boc-kle up :报道了在室温下使用市售的 AuCl 3 /CuI 作为催化剂,由胺、叔丁醇和 CO以原子经济方式合成N-叔丁氧羰基 ( N - Boc) 胺。实现了具有重要药用价值的N -Boc 胺中间体的克级制备,在工业合成中具有潜在的应用前景。
Cross-Electrophile Coupling of Unactivated Alkyl Chlorides
作者:Holt A. Sakai、Wei Liu、Chi “Chip” Le、David W. C. MacMillan
DOI:10.1021/jacs.0c04812
日期:2020.7.8
Alkylchlorides are bench-stable chemical feedstocks that remain among the most underutilized electrophile classes in transition metal catalysis. Overcoming intrinsic limitations of C(sp3)-Cl bond activation, we report the development of a novel organosilane reagent that can participate in chlorine atom abstraction under mild photocatalytic conditions. In particular, we describe the application of
The photoredox activation of inert chloroalkanes for the cross-coupling reaction with olefins, with a broad functional group tolerance under mild conditions is presented. By combining UV/Vis spectroscopy, EPR, radical clock and deuterium-labelling experiments, [Ni(Py2Tstacn)]+ is proposed to be catalytically competent to activate the Csp3−Cl bond, forming a free radical, which reacts with the alkene
The invention provides compounds of Formula (I) and Formula (II)
pharmaceutically acceptable salts, pro-drugs, biologically active metabolites, stereoisomers and isomers thereof wherein the variable are defined herein. The compounds of the invention are useful for treating immunological and oncological conditions.