Chlorination of 1-hydroxyiminopentane gave 1-chloro-1-nitrosopentane which reacted with sodium azide in DMF to form pentanohydroximoyl azide. The azidation of benzohydroximoyl chlorides was always accompanied by decomposition to benzonitriles. Treatment of carbohydroximoyl azides in ether with gaseous hydrogen chloride afforded 5-butyl- and 5-aryl-1-hydroxytetrazoles which reacted with acetic anhydride to form the corresponding acetates.
作者:Sandip B. Bharate、Anil K. Padala、Bashir A. Dar、Rammohan R. Yadav、Baldev Singh、Ram A. Vishwakarma
DOI:10.1016/j.tetlet.2013.04.102
日期:2013.7
corresponding aldehydes and terminal alkynes using recyclable montmorillonite clay supported Cu(II)/NaN3 catalytic system under aqueous conditions have been developed. The ‘domino’ one-pot MCR approach involves hydroxyamination of aldehydes followed by chlorination and then generation of reactive ‘nitrileoxide’ which undergoes 1,3-dipolar cycloaddition with alkynes to produce 3,5-disubstituted isoxazoles
已经开发了一种简单有效的单锅多组分方法,该方法使用可回收的蒙脱石粘土负载的Cu(II)/ NaN 3催化体系,在水性条件下直接从相应的醛和末端炔烃直接合成3,5-二取代的异恶唑。“多米诺”一锅式MCR方法涉及醛的羟基胺化,然后氯化,然后生成反应性“腈”,该炔与炔烃进行1,3-偶极环加成反应,生成3,5-二取代异恶唑。该方法操作简单,区域选择性,经济,并且具有出色的官能团相容性,可以高收率合成结构多样的异恶唑。
A general route to pentaco-ordinate amino(oxy)- and diamino(oxy)-phosphoranes from azido-compounds and phosphorus(III) reagents
作者:J. I. G. Cadogan、Ian Gosney、Elizabeth Henry、Thomas Naisby、Barry Nay、Nevin J. Stewart、Neil J. Tweddle
DOI:10.1039/c39790000189
日期:——
Bifunctional azido-compounds such as benzohydroximic azide, α-azidobenzaldehyde 2,4-dibromophenylhydrazone, trans-1-azido-2-hydroxycyclohexane, 2-azido-1-phenylethanol, 2-azidobenzyl alcohol, o-azidoaniline, and α-azidoacetophenones react with a variety of phosphorus(III) reagents to give pentaco-ordinate amino-(oxy)- and diamino(oxy)-phosphoranes.
POWER CABLE OF ALUMINIUM COATED WITH A TETRAZOLE COMPOUND CORROSION INHIBITOR
申请人:Prysmian S.p.A.
公开号:EP3353334B1
公开(公告)日:2020-09-23
POWER CABLE COMPRISING AN ALUMINIUM CORROSION INHIBITOR
申请人:PRYSMIAN S.p.A.
公开号:US20180254123A1
公开(公告)日:2018-09-06
The present invention relates to a power cable comprising a metallic electric conductor surrounded by one or more semiconductive layer and one or more insulating layer, said cable having at least one metallic element made of aluminium, wherein a corrosion inhibitor is provided in direct contact with said at least one metallic element made of aluminium, and wherein said corrosion inhibitor is a corrosion inhibitor of formula (I).