Cycloadditions. 44. A two-step conversion of carbonyl compounds into functionalized five- and six-membered ring thioethers via intramolecular cycloaddition
Cycloadditions. 44. A two-step conversion of carbonyl compounds into functionalized five- and six-membered ring thioethers via intramolecular cycloaddition
One-pot synthesis of five-membered cyclic thioethers or ethers via intramolecular nitrile oxide-olefin cycloaddition (INOC) or intramolecular alkoxycarbonyl nitronate-olefin cycloaddition (IAOC) by the use of methyl chloroformate
作者:Ming-Chung Yan、Jing-Yuan Liu、Wen-Wei Lin、Kuo-Hsi Kao、Ju-Tsung Liu、Jeong-Jiunn Jang、Ching-Fa Yao
DOI:10.1016/s0040-4020(99)00741-3
日期:1999.10
with allyl alcohol and base, can be converted into methoxycarbonyl nitronates 22 by treating the solution with methyl chloroformate and calytic amount of 4-dimethylaminopyridine (DMAP) in the presence of different amounts of triethylamine. Intermediates 22 can either undergo intramolecular alkoxycarbonyl nitronate-olefin cycloaddition (IAOC) to generate highly stereoselective product trans-14 or undergo
Stereoselectivity in intramolecular 1,3-dipolar cycloadditions. Nitrile oxides versus silyl nitronates
作者:W. Dehaen、A. Hassner
DOI:10.1016/s0040-4039(00)94618-5
日期:1990.1
Unlike nitrileoxides, silyl nitronates undergo highly stereoselective intramolecularcycloadditions to produce functionalized carbocyclic or heterocyclic rings.
与腈氧化物不同,甲磺酸硅烷基酯会经历高度立体选择性的分子内环加成反应,以生成功能化的碳环或杂环。
A Theoretical Evaluation of the Michael-Acceptor Ability of Conjugated Nitroalkenes
作者:Vishal Rai、Irishi N. N. Namboothiri
DOI:10.1002/ejoc.200600505
日期:2006.10
A theoreticalevaluation of the relative Michael-acceptor abilities of a variety of substituted aromatic and aliphatic nitroalkenes is reported. Several global and local reactivity indices were evaluated with the incorporation of natural charge obtained from natural bond orbital (NBO) analysis. Natural charges at the carbon atom β to the NO2 group and the condensed Fukui functions derived by this method
Pesticidal and parasiticidal use of 1-aryl-1-(substituted thio, sulfinyl and sulfonyl)-2-nitroethane compounds
申请人:American Cyanamid Company
公开号:US20020103256A1
公开(公告)日:2002-08-01
The present invention relates to the pesticidal use of 1-aryl-1-(substituted thio, sulfinyl and sulfonyl)-2-nitroethane compounds having the structural formula I
1
本发明涉及具有结构式I1的1-芳基-1-(取代硫、亚砜和磺酰基)-2-硝基乙烷化合物的杀虫用途。
DEHAEN, W.;HASSNER, A., TETRAHEDRON LETT., 31,(1989) N, C. 743-746