Scavenger assisted combinatorial process for preparing libraries of amides, carbamates and sulfonamides
申请人:ELI LILLY AND COMPANY
公开号:EP0825164A2
公开(公告)日:1998-02-25
This invention relates to a novel solution phase process for the preparation of amide, carbamate, and sulfonamide combinatorial libraries. These libraries have utility for drug discovery and are used to form wellplate components of novel assay kits.
ASYMMETRIC ORGANIC PEROXIDE, CROSSLINKING AGENT COMPRISING THE SAME, AND METHOD OF CROSSLINKING WITH THE SAME
申请人:NOF CORPORATION
公开号:EP1233014A1
公开(公告)日:2002-08-21
A crosslinking agent comprising an asymmetry organic peroxide having at least one structure unit of (substituted)benzoylcarbonyloxy group represented by the following formula (1) in the molecule thereof.
Environmentally friendly crosslinking agents and crosslinked silicone rubber moldings are provided thereby.
Specifically, useful crosslinking agents and crosslinking processes for silicone rubber are provided.
Second Generation Fluorous DEAD Reagents Have Expanded Scope in the Mitsunobu Reaction and Retain Convenient Separation Features
作者:Sivaraman Dandapani、Dennis P. Curran
DOI:10.1021/jo0488098
日期:2004.12.1
show expanded reaction scope while retaining the easy fluorous separation features. Byproducts from “half fluorous” reagent perfluorooctylpropyl tert-butyl azo dicarboxylate (C8F17(CH2)3O2CNNCO2tBu, F-DEAD-2) can be removed by fluorous flash chromatography, and byproducts from bis(perfluorohexylpropyl)azo dicarboxylate (C6F13(CH2)3O2CNNCO2(CH2)3C6F13, F-DEAD-3) can be removed by fluorous solid-phase
第一代氟DEAD试剂双(全氟己基乙基)偶氮二羧酸酯(C 6 F 13(CH 2)2 O 2 CN NCO 2(CH 2)2 C 6 F 13,F-DEAD-1)已证明相对于偶氮二羧酸二异丙酯表现不佳在困难的Mitsunobu反应中,涉及受阻醇或酸性较低的亲核试剂(苯酚)。两种带有丙烯间隔基而不是乙烯间隔基的新型第二代含氟试剂在扩大了反应范围的同时还保留了易于分离的氟的特征。“半氟”试剂全氟辛基丙基叔酸的副产物偶氮二羧酸丁酯(C 8 F 17(CH 2)3 O 2 CN NCO 2 t可以通过荧光快速色谱法除去Bu,F-DEAD-2),以及双(全氟己基丙基)偶氮二羧酸酯(C 6 F 13(CH 2)3 O 2 CN NCO 2(CH 2)3 C 6 F 13, F-DEAD-3)可通过氟固相萃取除去。新试剂有望为Mitsunobu反应中的分离问题提供通用和补充的解决方案,而不会限制反应范围。
ONLINE CONTINUOUS FLOW PROCESS FOR THE SYNTHESIS OF ORGANIC PEROXIDES USING HYDROGEN PEROXIDE AS RAW MATERIAL
申请人:Shanghai Hybrid-chem Technologies
公开号:US20200172478A1
公开(公告)日:2020-06-04
An online continuous flow production process for directly preparing organic peroxides by using hydrogen peroxide as a raw material. This production process uses hydrogen peroxide, catalyst, and an oxidation substrate as a raw material. Substrate will be turned to designated peroxides sequentially through oxidation and workup. This process is performed in a plug-and-produce integrated continuous flow reactor, and the raw materials are continuously fed to the reactor. So, specified peroxide can be continuously obtained at the outlet of the plug-and-produce integrated continuous flow reactor.
New radical reactions of S-alkoxycarbonyl xanthates. Total synthesis of (±)-cinnamolide and (±)-methylenolactocin
作者:Judith E Forbes、Radomir N Saicic、Samir Z Zard
DOI:10.1016/s0040-4020(98)01184-3
日期:1999.3
with visible light of S-alkoxycarbonyl xanthates derived from various alcohols gives rise to alkoxycarbonyl radicals with bifurcate reactivity: loss of carbon dioxide leads to deoxygenated derivatives (i.e. alkyl xanthates) whereas intramolecular addition to a suitably located double bond produces lactones; these new reactions were applied to the total synthesis of (±)-cinnamolide and (±)-methylenolactocin