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Nuclear magnetic resonance isotropic shifts of europium oxaloacetates 草酰乙酸铕的核磁共振各向同性位移
Pub Date : 1971-01-01 DOI: 10.1039/C29710001047
C. Reyes-Zamora, C. Tsai
N.m.r. isotropic shifts of the CH2 group of europium oxaloacetates provide spectral evidence for the formation of the α-oxocarboxylate complex between oxaloacetic acid and metal ions in aqueous solution.
草酰乙酸铕的CH2基团的N.m.r.各向同性位移为草酰乙酸与金属离子在水溶液中形成α-氧羧酸配合物提供了光谱证据。
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引用次数: 3
1,4-Shift of hydrogen from carbon to carbon in the lead tetra-acetate oxidation of monocyclic and acyclic alcohols 1,4-氢在四乙酸铅氧化单环和无环醇过程中由碳向碳的转变
Pub Date : 1971-01-01 DOI: 10.1039/C29710001612
D. Jeremić, S. Milosavljevic, V. Andrejević, M. Jakovljević-Marinković, Ẑ. Čeković, M. Mihailović
The use of α-deuteriated substrates has established that in the lead tetra-acetate oxidation of certain secondary alicyclic and open-chain alcohols, ketone formation proceeds, in part, by 1,4-transfer of hydrogen from the carbinol (α) carbon atom to the δ-carbon atom.
α-氘化底物的使用已经证实,在四乙酸铅氧化某些仲脂环和开链醇时,酮的形成部分是通过氢从甲醇(α)碳原子向δ-碳原子的1,4转移进行的。
{"title":"1,4-Shift of hydrogen from carbon to carbon in the lead tetra-acetate oxidation of monocyclic and acyclic alcohols","authors":"D. Jeremić, S. Milosavljevic, V. Andrejević, M. Jakovljević-Marinković, Ẑ. Čeković, M. Mihailović","doi":"10.1039/C29710001612","DOIUrl":"https://doi.org/10.1039/C29710001612","url":null,"abstract":"The use of α-deuteriated substrates has established that in the lead tetra-acetate oxidation of certain secondary alicyclic and open-chain alcohols, ketone formation proceeds, in part, by 1,4-transfer of hydrogen from the carbinol (α) carbon atom to the δ-carbon atom.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"223 1","pages":"1612-1613"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85930162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crystal structures of two organo-manganese complexes formed by acetyl migration to a co-ordinated double bond 乙酰基向配位双键迁移形成的两种有机锰配合物的晶体结构
Pub Date : 1971-01-01 DOI: 10.1039/C29710000752
M. Bennett, G. B. Robertson, R. Watt, P. Whimp
The structures of a delocalised pseudo-π-allylic (three electron)π-oxopropyl manganese tricarbonyl complex (A) and a σ-bonded Mn–C oxobutyl tricarbonyl complex (B) have been determined by three-dimensional X-ray structural analysis.
用三维x射线结构分析确定了一个离域的伪π-烯丙基(三电子)π-氧丙基锰三羰基配合物(a)和一个σ键的Mn-C氧丁基三羰基配合物(B)的结构。
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引用次数: 9
Structure of evertetrose and everninonitrose evertrose和evernitrose的结构
Pub Date : 1971-01-01 DOI: 10.1039/C29710000746
A. Ganguly, O. Sarre, S. Szmulewicz
The structure and absolute stereochemistry of evertetrose and everninonitrose, two degradation products of everninomicin “D”, have been established.
建立了伊维菌素“D”的两种降解产物——伊维菌素葡萄糖和伊维菌素硝基糖的结构和绝对立体化学。
{"title":"Structure of evertetrose and everninonitrose","authors":"A. Ganguly, O. Sarre, S. Szmulewicz","doi":"10.1039/C29710000746","DOIUrl":"https://doi.org/10.1039/C29710000746","url":null,"abstract":"The structure and absolute stereochemistry of evertetrose and everninonitrose, two degradation products of everninomicin “D”, have been established.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"406 1","pages":"746-746"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76709776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Direct observation of the two forms of aquocyanocobyric acid in water by carbon-13 Fourier transform nuclear magnetic resonance 用碳-13傅里叶变换核磁共振直接观察水中两种形态的水氰酸
Pub Date : 1971-01-01 DOI: 10.1039/C29710000728
D. Doddrell, A. Allerhand
Proton-decoupled natural-abundance carbon-13 Fourier transform n.m.r. spectra of aqueous solutions of aquocyanocobyric acid and dicyanocobyric acid were recorded at 15·08 MHz: the spectrum of the first compound showed the presence of two isomers, and many of the carbon atoms showed large chemical shift variations between the two isomers.
在15·08 MHz下记录了水氰酸和双氰酸水溶液的质子解耦自然丰度碳-13傅里叶变换n.m.r.光谱:第一个化合物的光谱显示存在两个异构体,并且许多碳原子在两个异构体之间表现出较大的化学位移变化。
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引用次数: 5
The synthesis of cis,cis-1,3,5-triaminocyclohexane-NN′N′-triacetic acid and its cobalt(III) complex 顺式,顺式-1,3,5-三氨基环己烷- nn ' n ' -三乙酸及其钴(III)配合物的合成
Pub Date : 1971-01-01 DOI: 10.1039/C2971000065B
L. J. Zompa, J. Shindler
The synthesis of a new stereospecific amino-acid cis,cis-1,3,5-triaminocyclohexane-NN′N″-triacetic acid and its cobalt(III) complex are reported.
报道了一种新型立体定向氨基酸顺式,顺式-1,3,5-三氨基环己烷- nn 'N″-三乙酸及其钴(III)配合物的合成。
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引用次数: 1
Metal reductions of malonates and oxalates. A covenient decarboxylation route for disubstituted malonates and synthesis of keten acetals 丙二酸盐和草酸盐的金属还原。二取代丙二酸酯的便捷脱羧途径及酮缩醛的合成
Pub Date : 1971-01-01 DOI: 10.1039/C29710000136
Y. Kuo, Francis. Chen, C. Ainsworth, J. Bloomfield
Alkali-metal reduction of disubstituted malonates or treatment of esters with base in the presence of trimethylchlorosilane gives high yields of the reactive disubstituted keten alkyl trimethylsilyl acetals, while diethyl oxalate, under similar conditions is reduced to 1,2-diethyl-1,2-bis(trimethylsilyloxy)ethylene.
碱金属还原二取代丙二酸酯或在三甲基氯硅烷存在下用碱处理酯,可得到高收率的活性二取代酮烷基三甲基硅基缩醛,而草酸二乙酯在类似条件下可还原为1,2-二乙基-1,2-二(三甲基硅氧基)乙烯。
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引用次数: 19
The +⅓ oxidation state of mercury 汞的+ 1 / 3氧化态
Pub Date : 1971-01-01 DOI: 10.1039/C2971001168A
R. Gillespie, P. Ummat
The new compound Hg62+(AsF6–)2 containing mercury in the previously unknown oxidation state of +⅓ has been obtained by the reaction of mercury with arsenic pentafluoride in liquid SO2.
在SO2液体中,汞与五氟化砷反应,得到了含有+ 1 / 3氧化态汞的新化合物Hg62+(AsF6 -)2。
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引用次数: 7
Sisomicin: stereochemistry and attachment of the unsaturated sugar moiety 西索米星:立体化学和不饱和糖部分的附着
Pub Date : 1971-01-01 DOI: 10.1039/C29710000924
H. Reimann, R. Jaret, D. Cooper
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引用次数: 9
The crystal and molecular structure of Pollards salt, (NH4)6(AuCl4)3Ag2Cl5 Pollards盐(NH4)6(AuCl4)3Ag2Cl5的晶体和分子结构
Pub Date : 1971-01-01 DOI: 10.1039/C29710001523
J. Bowles, D. Hall
Crystal structure determination of (NH4)6Au3Ag2Cl17 has shown that it contains the anions AuCl4– and the hitherto unreported Ag2Cl53–, the ions being so arranged that intervalence exchange occurs between them.
对(NH4)6Au3Ag2Cl17的晶体结构测定表明,它含有阴离子AuCl4 -和迄今未报道的阴离子Ag2Cl53 -,离子的排列方式使它们之间发生了价间交换。
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引用次数: 4
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