Stereocontrolled Formation of Epoxy Peroxide FunctionalityAppended to a Lactam Ring
作者:Charles M. Marson、Afzal Khan、Rod A. Porter
DOI:10.1021/jo001313f
日期:2001.7.1
The action of tert-butylhydroperoxide and tin(IV) chloride upon allylic alcohols containing a lactam ring leads mainly to epoxy alkyl peroxides with high diastereoselection. Both the stereochemistry and the products formed are in marked contrast to the reactions of the analogous carbocyclic allylic alcohols with tert-butyl hydroperoxide-VO(acac)2.
Niobium chloride promoted the nucleophilic addition of allyltrimethylsilane, ethyl acetoacetate, indole and the silyl enol ether derived from acetone to cyclic N-acyliminium ions. The products were obtained in good yields.
Catalytic Enantio- and Diastereoselective Alkylations with Cyclic Sulfamidates
作者:Thomas A. Moss、Beatriz Alonso、David R. Fenwick、Darren J. Dixon
DOI:10.1002/anie.200905329
日期:2010.1.12
Open for business: The enantio‐ and diastereoselective nucleophilic ring opening of five‐membered and six‐membered cyclicsulfamidates under asymmetric phase‐transfer catalysis is presented. A range of pro‐nucleophiles have been successfully alkylated in good yields and in good to excellent enantioselectivites.
HIGHLY-FLUORESCENT AND PHOTO-STABLE CHROMOPHORES FOR ENHANCED SOLAR HARVESTING EFFICIENCY
申请人:NITTO DENKO CORPORATION
公开号:US20130074927A1
公开(公告)日:2013-03-28
The invention provides highly fluorescent materials comprising a single (n=0) or a series (n=1, 2, etc.) of benzo heterocyclic systems. The photo-stable highly luminescent chromophores are useful in various applications, including in wavelength conversion films. Wavelength conversion films have the potential to significantly enhance the solar harvesting efficiency of photovoltaic or solar cell devices.
[EN] ISOXAZOLINE DERIVATIVES AND THEIR USES IN AGRICULTURE RELATED APPLICATION<br/>[FR] DÉRIVÉS D'ISOXAZOLINE ET LEURS UTILISATIONS DANS UNE APPLICATION LIÉE À L'AGRICULTURE
申请人:DONGGUAN HEC TECH R & D CO LTD
公开号:WO2019062802A1
公开(公告)日:2019-04-04
The present invention provides isoxazoline derivatives and uses thereof in agriculture; in particular, the present invention provides a compound having formula (I), or a stereoisomer, an N-oxide or a salt thereof, preparation methods thereof, and compositions containing these compounds and uses thereof in agriculture, particularly uses as herbicide active ingredients for controlling unwanted plants; wherein R1, R2, R3, R4, n, R5, R6 and Hy are as described in the invention.