First examples of superelectrophile initiated iodination of alkanes and cycloalkanes
摘要:
Direct iodination of alkanes and cycloalkanes in the presence of superelectrophiles has been accomplished for the first time. The reactions of saturated hydrocarbons with I-2 in the presence of CCl4.2All(3) at -20degreesC afforded monoiodides in good yields and selectivities. (C) 2002 Elsevier Science Ltd. All rights reserved.
Stereoselective Synthesis of Trisubstituted Alkenes through Sequential Iron-Catalyzed Reductive<i>anti</i>-Carbozincation of Terminal Alkynes and Base-Metal-Catalyzed Negishi Cross-Coupling
作者:Chi Wai Cheung、Xile Hu
DOI:10.1002/chem.201504049
日期:2015.12.7
stereoselective synthesis of trisubstituted alkenes is challenging. Here, we show that an iron‐catalyzed anti‐selective carbozincation of terminal alkynes can be combined with a base‐metal‐catalyzed cross‐coupling to prepare trisubstituted alkenes in a one‐pot reaction and with high regio‐ and stereocontrol. Cu‐, Ni‐, and Co‐based catalytic systems are developed for the coupling of sp‐, sp2‐, and sp3‐hybridized
[EN] PYRAZOLYL SUBSTITUTED TETRAHYDROPYRANYLSULFONES<br/>[FR] TÉTRAHYDROPYRANYLSULFONES À SUBSTITUTION PYRAZOLYLE
申请人:GRUENENTHAL GMBH
公开号:WO2017059966A1
公开(公告)日:2017-04-13
The invention relates to pyrazolyl substituted tetrahydropyranylsulfones as voltage gated calcium channel blockers, to pharmaceutical compositions containing these compounds and also to these compounds for use in the treatment and/or prophylaxis of pain and further diseases and/or disorders.
[EN] MODULATORS OF INDOLEAMINE 2,3-DIOXYGENASE<br/>[FR] MODULATEURS D'INDOLAMINE 2,3-DIOXYGÉNASE
申请人:GLAXOSMITHKLINE INTELLECTUAL PROPERTY (NO 2) LTD
公开号:WO2017051354A1
公开(公告)日:2017-03-30
Provided are compounds and pharmaceutically acceptable salts thereof, their pharmaceutical compositions, their methods of preparation, and methods for their use in the prevention and/or treatment of HIV; including the prevention of the progression of AIDS and general immunosuppression.
Halogen-exchange reactions between alkyl fluorides and boron trihalides or titanium tetrahalides. A convenient synthesis of alkyl halides from alkyl fluorides
作者:Mohammad Namavari、N. Satyamurthy、Jorge R. Barrio
DOI:10.1016/0022-1139(94)03193-4
日期:1995.5
A simple and effective method for converting fluoroalkanes to their corresponding chloro-, bromo- and iodo-alkanes using commercially available borontrihalides and titanium tetrahalides is described.
HETEROCYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
申请人:Samsung Electronics Co., Ltd.
公开号:US20210167299A1
公开(公告)日:2021-06-03
Provided are a heterocyclic compound represented by Formula 1 and having an asymmetric structure and an organic light-emitting device including the heterocyclic compound:
wherein, in Formula 1, X
1
is O or Se, Ar
1
is a group represented by Formula 1A, and Ar
2
is a group represented by Formula 1B,
and the other substituents are understood as described in connection with the detailed description.