Design, Synthesis, Acaricidal Activities, and Structure–Activity Relationship Studies of Novel Oxazolines Containing Sulfonate Moieties
摘要:
With the ultimate goal of addressing pest-related constraints on global agricultural production, we used combination principles to design and synthesize 2,4-diphenyl-1,3-oxazolines containing a sulfonate moiety at the para-position of the 4-phenyl group. The target compounds, which have strong affinity for lipids and can be expected to traverse cell membranes, were characterized by H-1 and C-13 NMR spectroscopy and high-resolution mass spectrometry. Their activities against the larvae and eggs of carmine spider mites (Tetranychus cinnabarinus) were determined by a leaf-dipping method and compared with the activity of the commercial acaricide etoxazole. Most of the test compounds displayed good ovicidal and larvicidal activities. In particular, a tert-butylphenyl-substituent compound possessed better larvicidal activity (LC50 = 0.022 +/- 0.009 mg/L) and ovicidal activity (0.044 +/- 0.020 mg/L) than etoxazole (0.091 +/- 0.051 and 0.095 +/- 0.059 mg/L, respectively). Given its outstanding bioactivities, this compound deserves further attention as a pesticide candidate.
Synthesis of <i>m</i>-Alkylphenols via a Ruthenium-Catalyzed C–H Bond Functionalization of Phenol Derivatives
作者:Gang Li、Panpan Gao、Xulu Lv、Chen Qu、Qingkai Yan、Ya Wang、Suling Yang、Junjie Wang
DOI:10.1021/acs.orglett.7b00885
日期:2017.5.19
The first example of the synthesis of m-alkylphenols via a ruthenium-catalyzed CAr–H bond functionalization of phenolderivatives with sec/tert-alkyl bromides is reported. Mechanistic studies indicated that the m-CAr–H bond alkylation may involve a radical process and that a six-membered ruthenacycle complex was the active catalyst. Moreover, this approach can provide an expedited strategy for the
合成的第一个例子米烷基酚经由钌催化Ç氩苯酚衍生物与-H键官能/叔秒报道烷基溴化物。机理研究表明,m -C Ar -H键烷基化可能涉及自由基过程,六元钌环络合物是活性催化剂。而且,这种方法可以为许多值得注意的药物和其他功能分子的原子/步经济合成提供快速的策略。
Synthesis and Acaricidal- and Insecticidal-Activity Evaluation of Novel Oxazolines Containing Sulfiliminyl Moieties and Their Derivatives
作者:Xiuling Yu、Yu Zhang、Yuxiu Liu、Yongqiang Li、Qingmin Wang
DOI:10.1021/acs.jafc.9b00657
日期:2019.4.17
insecticidal activity though their structure–activity relationships that were different. Oxazolines containing an N-cyano sulfiliminyl moiety at the para position of the 4-phenyl group exhibited better insecticidal activities against cotton bollworm and corn borer than etoxazole, whereas the compounds containinggroupsderived from sulfiliminyl and sulfoximinyl had weak insecticidal activities. This research
磺酰亚胺和亚磺酰亚胺与药物化学和作物保护高度相关,因为所得产品可以显示出有趣的生物活性。在这里,我们报告设计和合成一系列新的2,4-二苯基-1,3-恶唑啉,其中含有亚磺酰亚胺基和亚磺酰亚胺基部分。对新化合物的杀螨和杀虫活性进行了评估,结果表明这些化合物对红蜘蛛幼虫和卵表现出优异的杀螨活性。的LC 50个的值6A-7 ,图6B-3 ,6B-4 ,图6C-2 ,和6C-4对红蜘蛛幼虫约4到6倍降低比市售杀虫剂乙螨唑(0.0221毫克的L -1),而6a-4对红蜘蛛卵的LC 50值为0.0006 mg L –1,比乙恶唑(0.0063 mg L –1)低10倍。同时,大多数化合物虽然具有不同的构效关系,但仍表现出杀虫活性。含有唑啉Ñ在4-苯基基团对位上的-氰基亚磺酰亚胺基部分对棉铃虫和玉米bore的杀虫活性比乙恶唑更好,而含有衍生自亚磺酰亚胺基和亚磺酰亚胺基的基团的化合物则具有较弱的杀虫活性。
Disubstituted biphenyloxazolines
申请人:Bayer Aktiengesellschaft
公开号:US06410581B1
公开(公告)日:2002-06-25
The present invention relates to novel biphenyloxazolines of the formula (I)
in which
X1, X2, X3, R1, R2 and R3 are each as defined in the description,
to processes for their preparation and to the use of the biphenyloxazolines for controlling animal pests.