Studies on Crude Drugs Effective on Visceral Larva Migrans. Part XVI. Nematocidal Activity of Long Alkyl Chain Amides, Amines, and Their Derivatives on Dog Roundworm Larvae.
activity of amides and amines having a long alkyl chain against the second-stage larva of dog roundworm, Toxocara canis, was examined. Long chain acyl amides with smaller substituents on the nitrogen showed stronger activity and the activity of cyclic amine amides was stronger than that of acyclic ones. In a series of homologous amides, the activity was dependent on the alkyl chain length: it reached
oxidative coupling of aromatic or aliphatic aldehydes with amines mediated by riboflavin tetraacetate (RFTA), an inexpensive organic photocatalyst, and visiblelight using oxygen as the sole oxidant. The method is based on the oxidative power of an excited flavin catalyst and the relatively low oxidation potential of the hemiaminal formed by amine to aldehyde addition.
Uncovering the Importance of Proton Donors in TmI
<sub>2</sub>
‐Promoted Electron Transfer: Facile CN Bond Cleavage in Unactivated Amides
作者:Michal Szostak、Malcolm Spain、David J. Procter
DOI:10.1002/anie.201303178
日期:2013.7.8
for the development of challenging electron‐transfer processes. It was demonstrated that alcohols are critical for the formation of a thermodynamically more powerful reductant from TmI2 (thulium diiodide), the first nonclassical lanthanide(II) iodide in the series (TmI2, DyI2, NdI2). The TmI2(ROH)n reagent promotes an unprecedented cleavage of the σ CNbond in amides.
非经典镧系 (II) 碘化物是用于开发具有挑战性的电子转移过程的现代试剂。事实证明,醇对于从 TmI 2(二碘化铥)(该系列中的第一种非经典镧系元素 (II) 碘化物(TmI 2、 DyI 2、 NdI 2 ))形成热力学更强大的还原剂至关重要。TmI 2 (ROH) n试剂促进酰胺中 σ C N 键前所未有的断裂。
Generation and Trapping of Ketenes in Flow
作者:Cyril Henry、David Bolien、Bogdan Ibanescu、Sally Bloodworth、David C. Harrowven、Xunli Zhang、Andy Craven、Helen F. Sneddon、Richard J. Whitby
DOI:10.1002/ejoc.201403603
日期:2015.3
Ketenes were generated by the thermolysis of alkoxyalkynes under flow conditions, and then trapped with amines and alcohols to cleanly give amides and esters. For a 10 min reaction time, temperatures of 180, 160, and 140 degrees C were required for >95 % conversion of EtO, iPrO, and tBuO alkoxyalkynes, respectively. Variation of the temperature and flow rate with inline monitoring of the output by
酮基是通过在流动条件下热解烷氧基炔烃而生成的,然后用胺和醇截留以干净地得到酰胺和酯。在10分钟的反应时间内,分别需要180、160和140摄氏度的温度才能分别使EtO,iPrO和tBuO烷氧基炔烃的转化率> 95%。温度和流速的变化以及通过红外光谱对输出的在线监测使得可以容易地估计用于1-乙氧基-1-辛炔转化的动力学参数(E a = 105.4 kJ / mol)。用醇捕集原位生成的乙烯酮以得到酯,需要添加叔胺催化剂以防止将乙烯酮竞争性地[2 + 2]加成至烷氧基炔烃前体。
USE OF SARMENTINE AND ITS ANALOGS FOR CONTROLLING PLANT PESTS
申请人:Huang Huazhang
公开号:US20110021358A1
公开(公告)日:2011-01-27
Methods and compositions for controlling plant pests, particularly weeds and/or plant phytopathogens using sarmentine and/or analogs thereof are disclosed.