待解决 悬赏分:1 - 离问题结束还有 1,3-Dicarbonyl Compounds问题补充:匿名 2013-05-23 12:21:38 1,3-二羰基化合物 匿名 2013-05-23 12:23:18 1,3二羰化化合物 匿名 2013-05-23 12:24:58 1,3Dicarbonyl化合物 匿名 2013-05-23 12:26:38 1,3-二羰基化合物 匿名 2013-05-23 12...
1,3-Dicarbonyl compounds are provided having the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are defined in the description as well as metal and organotin enolate salts thereof. The compounds are effective in enhancing the resistance to deterioration by heat and light of ...
1,3-二羰基化合物1. For the first part, we stressed reactions of sulphoxide with 1,3-dicarbonyl compounds promoted by Cu(OAc)2·H2O, 2,2′-biimidazole and iodobenzene diacetate. 第一部分为二醋酸碘苯、二价铜离子及联咪唑促进下的1,3-二羰基化合物与亚砜的反应研究。
1.For the first part, we stressed reactions of sulphoxide with 1,3-dicarbonyl compounds promoted by Cu(OAc)2·H2O, 2,2′-biimidazole and iodobenzene diacetate.第一部分为二醋酸碘苯、二价铜离子及联咪唑促进下的1,3-二羰基化合物与亚砜的反应研究。 2.The first part studied the regioselective ad...
这个无金属催化的反应具有良好的底物兼容性和合成实用性,并成功地实现了三个生物活性分子的高效合成。在I2-DMSO条件下实现1,3-二羰基化合物的C−C键直接断裂并参与构筑新型杂环化合物的方法正在实验室的进一步研究中。 该工作以“Direct C−C Bond Cleavage of 1,3-Dicarbonyl Compounds as a Single-Carbon ...
这个无金属催化的反应具有良好的底物兼容性和合成实用性,并成功地实现了三个生物活性分子的高效合成。在I2-DMSO条件下实现1,3-二羰基化合物的C−C键直接断裂并参与构筑新型杂环化合物的方法正在实验室的进一步研究中。 该工作以“Direct C−C Bond Cleavage of 1,3-Dicarbonyl Compounds as a Single-Carbon ...
1,3-Dicarbonyl compounds 专利名称：1,3-Dicarbonyl compounds 发明人：Seizi Kurozumi,Takeshi Toru,Toshio Tanaka,Shuzi Miura,Makiko Kobayashi,Sachio Ishimoto 申请号：US05/756739 申请日：19770104 公开号：US04139717A 公开日：19790213 专利内容由知识产权出版社提供 摘要：1,3-Dicarbonyl compounds useful as ...
(1,3-Dicarbonyl compounds) 4-1、醛酮-烯醇互变 4-1、醛酮-烯醇互变 OH O OH O -7 K = 3 x 10-7 K = 3 x 10 CH CH CH CH CH CH CH CH 2 3 2 3 O O OH OH -9 K = 6 x 10-9 CH CCH K = 6 x 10 CH CCH CH CCH 3 3 CH CCH 3 3 2 3 2 3 酸催化烯醇化(Acid ...
Considering the significant role of hydroxymethylation in organic synthesis, we have explored the introduction of a hydroxymethyl group into a range of 1,3-dicarbonyl compounds using DMSO (Scheme 1). This investigation seeks to broaden the utility and applicability of DMSO in facilitating ...
摘要: A practical protocol for the large-scale preparation of 2-diazo-1,3-dicarbonyl compounds is described by diazo-transfer reactions with tosyl azide followed by efficient chromatographic purifications on silica gel and/or alumina.关键词: