Two types of silylcarbocyclization reactions (SiCaCs) of 1,6-diynes are discussed: (i) silylcarbocyclization-hydrosilylation (SiCaC-HS) reactions giving 3-(silylmethylene)-4-(silylmethyl)pyrrolidine, 3-(silylmethylene)-4-(silylmethyl)tetrahydrofuran, 3,4-bis(silylmethyl)-3-pyrroline, and 1,2-bis(silylmethyl)-4,4-dicarbethoxycyclopentene; and (ii) silylcarbobicyclization (SiCaB) reactions yielding a variety of carbocyclic and heterocyclic bicyclo[3.3.0] systems. Mechanisms for these SiCaC-HS and SiCaB processes are proposed.
The invention provides multivalent surface-crosslinked micelle (SCM) particles, crosslinked reverse micelle (CRM) particles, and methods of making and using them. The SCM particles can be used, for example, to inhibit a virus or bacteria from binding to a host cell. The inhibition can be used in therapy for the flu, cancer, or AIDS. The CRM particles can be used, for example, to prepare metal nanoparticles or metal alloy nanoparticles, or they can be used in catalytic reactions.
Cobalt-Catalyzed Cyclization/Hydroboration of 1,6-Diynes with Pinacolborane
作者:Qiang Huang、Meng-Yang Hu、Shou-Fei Zhu
DOI:10.1021/acs.orglett.9b02873
日期:2019.10.4
Herein, we report a protocol for cyclization/hydroboration of 1,6-diynes with pinacolborane using a cobalt catalyst generated in situ from a Co(II)-phenanthroline complex, tetrabutylammonium fluoride, and pinacolborane. This protocol, which features good functional group tolerance, a broad substrate scope, and excellent stereoselectivity, enables the synthesis of useful cyclic 1,3-dienylboron compounds
A Dicationic Ruthenium Alkylidene Complex for Continuous Biphasic Metathesis Using Monolith-Supported Ionic Liquids
作者:Benjamin Autenrieth、Wolfgang Frey、Michael R. Buchmeiser
DOI:10.1002/chem.201201199
日期:2012.10.29
ruthenium–alkylidene complex [Ru(dmf)3(IMesH2)(CH‐2‐(2‐PrO)‐C6H4)][(BF4)2] (1; IMesH2=1,3‐dimesitylimidazolin‐2‐ylidene) has been prepared and used in continuous metathesis reactions by exploiting supported ionic‐liquid phase (SILP) technology. For these purposes, ring‐opening metathesispolymerization (ROMP)‐derived monoliths were prepared from norborn‐2‐ene, tris(norborn‐5‐ene‐2‐ylmethyloxy)methylsilane
申请人:Iowa State University Research Foundation, Inc.
公开号:US10188605B2
公开(公告)日:2019-01-29
The invention provides multivalent surface-crosslinked micelle (SCM) particles, crosslinked reverse micelle (CRM) particles, and methods of making and using them. The SCM particles can be used, for example, to inhibit a virus or bacteria from binding to a host cell. The inhibition can be used in therapy for the flu, cancer, or AIDS. The CRM particles can be used, for example, to prepare metal nanoparticles or metal alloy nanoparticles, or they can be used in catalytic reactions.