Two-Step Synthesis of Unsymmetrical Diaryl Sulfides by Electrophilic Thiolation of Non-functionalized (Hetero)arenes
作者:Marvin J. Böhm、Christopher Golz、Isabelle Rüter、Manuel Alcarazo
DOI:10.1002/chem.201802806
日期:2018.10.9
article reports the efficient preparation of a series of unsymmetrically substituted thioethers through a two‐step procedure consisting of an initial metal‐free C−H sulfenylation of electron‐rich (hetero)arenes with newly prepared succinylthioimidazolium salts. Subsequent reaction of the arylthioimidazolium intermediates with Grignard reagents afford the desired thioethers. The synthetic protocol described
A Mild and Versatile Method for the Synthesis of Alkyl Ethers from Methoxymethyl Ethers and Application to the Preparation of Sterically Crowded Ethers
A mild and divergent route for the synthesis of alkylethersfrommethoxymethyl (MOM) and methoxyethyl (ME) ether derivatives via pyridinium‐type salt intermediates has been developed. The addition of organocuprates to the salts afforded the corresponding alkylethers, including highly crowded ones, in high yields even in the presence of acid‐ or base‐sensitive functional groups.
SUBSTITUTED NUCLEOSIDE DERIVATIVES USEFUL AS ANTICANCER AGENTS
申请人:Pfizer Inc.
公开号:US20160244475A1
公开(公告)日:2016-08-25
Compounds of the general formula (I):
processes for the preparation of these compounds, compositions containing these compounds, and the uses of these compounds.
通式(I)的化合物:
制备这些化合物的方法,含有这些化合物的组合物,以及这些化合物的用途。
Synthesis of Benzotriazine and Aryltriazene Derivatives Starting from 2-Azidobenzonitrile Derivatives
作者:Azadeh Nakhai、Birgitta Stensland、Per H. Svensson、Jan Bergman
DOI:10.1002/ejoc.201000328
日期:2010.12
3-Substituted 3,4-dihydro-4-imino-1,2,3-benzotriazine derivatives 7 were formed from 2-azidobenzonitriles 4 as starting materials on treatment with Grignard or lithium organic reagents. In some cases these procedures gave aryltriazenes 10 and 11 as products. All compounds were identified by NMR spectroscopy and the structures of three products, namely 7a, 10a and 11i, were corroborated by X-ray crystallography
Synthesis and receptor affinities of new 3‐quinuclidinyl α‐heteroaryl‐α‐aryl‐α‐hydroxyacetates
作者:Victor I. Cohen、Raymond E. Gibson、Linda H. Fan、Rosanna de la Cruz、Miriam S. Gitler、Erin Hariman、Richard C. Reba
DOI:10.1002/jps.2600810405
日期:1992.4
analogues of 3‐quinuclidinyl benzilate were prepared in which one phenyl ring was substituted by a heterocycle; a bromine was included on either the remaining phenyl or the heterocycle to provide information relating to the affinity of potential radiohalogenated derivatives. Their affinities for the muscarinic cholinergic receptor were determined. Replacing a phenyl ring with either the 2‐ or 3‐furyl moiety