The rate of deuterium exchange of methane with caesium cyclohexylamide in cyclohexylamine at 50° is 3·1 × 10–2 that of cyclopropane, on a perhydrogen-atom basis.
在50°环己胺中，甲烷与环己胺铯的氘交换率为环丙烷的3·1 × 10-2(以过氢原子为基础)。
{"title":"Kinetic acidity of methane","authors":"A. Streitwieser, David R. Taylor","doi":"10.1039/C29700001248","DOIUrl":"https://doi.org/10.1039/C29700001248","url":null,"abstract":"The rate of deuterium exchange of methane with caesium cyclohexylamide in cyclohexylamine at 50° is 3·1 × 10–2 that of cyclopropane, on a perhydrogen-atom basis.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"100 1","pages":"1248-1248"},"PeriodicalIF":0.0,"publicationDate":"2003-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85846953","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}
The reactivity of 3-alkyl-1-allylindoles as model systems in the biogenesis and synthesis of the echinulin-type compounds has been studied: in the presence of acids the crotyl and γγ-dimethylallyl groups migrate from the 1- to the 2-position of the indole nucleus with a partial allylic rearrangement.
{"title":"Rearrangement of 3-alkyl-1-allylindoles: a model reaction for the biogenesis of echinulin-type compounds","authors":"G. Casnati, A. Pochini","doi":"10.1039/C29700001328","DOIUrl":"https://doi.org/10.1039/C29700001328","url":null,"abstract":"The reactivity of 3-alkyl-1-allylindoles as model systems in the biogenesis and synthesis of the echinulin-type compounds has been studied: in the presence of acids the crotyl and γγ-dimethylallyl groups migrate from the 1- to the 2-position of the indole nucleus with a partial allylic rearrangement.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"48 1","pages":"1328-1329"},"PeriodicalIF":0.0,"publicationDate":"1974-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74113806","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}
The methoxyphthioceranes derived irom phthiocerols A and B are shown to have erythro-configuration, thus enabling assignment of absolute configuration to the corresponding asymmetric centres in the phthiocerols.
由邻硫酚A和B衍生的甲氧基酞菁具有红细胞构型，因此可以将绝对构型分配给邻硫酚中相应的不对称中心。
{"title":"Stereochemistry of the methoxyphthioceranes","authors":"K. Maskens, N. Polgar","doi":"10.1039/C29700000673","DOIUrl":"https://doi.org/10.1039/C29700000673","url":null,"abstract":"The methoxyphthioceranes derived irom phthiocerols A and B are shown to have erythro-configuration, thus enabling assignment of absolute configuration to the corresponding asymmetric centres in the phthiocerols.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"285 1","pages":"673-673"},"PeriodicalIF":0.0,"publicationDate":"1973-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77337277","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}
Fluorescence quenching by benzoic acid proceeds by a hydrogen-bonding mechanism if the excited molecule is capable of forming a hydrogen bond and by an electron-transfer mechanism if it is not.
{"title":"Fluorescence quenching by benzoic acid","authors":"D. W. Ellis, R. Hamel, B. Solomon","doi":"10.1039/C29700001697","DOIUrl":"https://doi.org/10.1039/C29700001697","url":null,"abstract":"Fluorescence quenching by benzoic acid proceeds by a hydrogen-bonding mechanism if the excited molecule is capable of forming a hydrogen bond and by an electron-transfer mechanism if it is not.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"18 1","pages":"1697-1697"},"PeriodicalIF":0.0,"publicationDate":"1972-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90341316","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}
3(3H)-Benzoborepin-3-ol which appears to be aromatic, is synthesised from 1,2-diethynylbenzene.
以1,2-二乙基苯为原料合成了3(3H)-苯并甲醚-3-醇，它具有芳香性。
{"title":"3(3H)-benzoborepin-3-ol","authors":"George. Axelrad, D. Halpern","doi":"10.1039/C29710000291","DOIUrl":"https://doi.org/10.1039/C29710000291","url":null,"abstract":"3(3H)-Benzoborepin-3-ol which appears to be aromatic, is synthesised from 1,2-diethynylbenzene.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"1 1","pages":"291-291"},"PeriodicalIF":0.0,"publicationDate":"1971-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76487364","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}
The pure n.q.r. resonance spectra of 35Cl and 79Br in cupric chloride and bromide complexes of pyridine N-oxide are used to obtain structural information.
利用35Cl和79Br在氯化铜和n -氧化物吡啶配合物中的纯n.q.r共振光谱获得结构信息。
{"title":"Nuclear quadrupole resonance spectra of pyridine N-oxide complexes of copper(II) halides","authors":"J. J. R. F. Silva, R. Wootton","doi":"10.1039/C29700000403","DOIUrl":"https://doi.org/10.1039/C29700000403","url":null,"abstract":"The pure n.q.r. resonance spectra of 35Cl and 79Br in cupric chloride and bromide complexes of pyridine N-oxide are used to obtain structural information.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"19 1","pages":"403-404"},"PeriodicalIF":0.0,"publicationDate":"1971-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86745449","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}
The 1,2-dimethylallyl derivative, anisoxide, is not present in star anise oil or in the seeds of Illicium verum; its synthesis from a 3,3-dimethylallyl ether present in the oil suggests that it was obtained earlier as a result of the isolation procedure.
{"title":"Anisoxide: an artefact from star anise oil formed by Claisen rearrangement","authors":"H. M. Okely, M. F. Grundon","doi":"10.1039/C2971001157B","DOIUrl":"https://doi.org/10.1039/C2971001157B","url":null,"abstract":"The 1,2-dimethylallyl derivative, anisoxide, is not present in star anise oil or in the seeds of Illicium verum; its synthesis from a 3,3-dimethylallyl ether present in the oil suggests that it was obtained earlier as a result of the isolation procedure.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73799845","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}
Octadienyl and butenyl substituted amines have been prepared by reaction of primary and secondary amines with butadiene catalysed by nickel(0) complexes.
在镍(0)配合物的催化下，伯胺和仲胺与丁二烯反应制备了辛二烯基和丁烯基取代胺。
{"title":"Nickel complex-catalysed reactions of butadiene with amines","authors":"R. Baker, D. E. Halliday, Trevor N. Smith","doi":"10.1039/C29710001583","DOIUrl":"https://doi.org/10.1039/C29710001583","url":null,"abstract":"Octadienyl and butenyl substituted amines have been prepared by reaction of primary and secondary amines with butadiene catalysed by nickel(0) complexes.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"74 1","pages":"1583-1584"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73844806","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}
Oxidation of the readily prepared 1-amino-2-quinoxalones gives 1,2,4-benzotriazines in good yield.
易制备的1-氨基-2-喹诺酮氧化得到产率高的1,2,4-苯并三嗪。
{"title":"A new synthesis of 1,2,4-benzotriazines","authors":"B. Adger, C. Rees, A. A. Sale, R. Storr","doi":"10.1039/C2971000695A","DOIUrl":"https://doi.org/10.1039/C2971000695A","url":null,"abstract":"Oxidation of the readily prepared 1-amino-2-quinoxalones gives 1,2,4-benzotriazines in good yield.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74376410","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}
Three absorptions associated with the electron (925 nm), the positive ion (625 nm), and an unidentified species (300 nm) have been observed on pulse radiolysis of dimethyl sulphoxide.
{"title":"Pulse radiolysis of dimethyl sulphoxide","authors":"A. Koulkes-pujo, L. Gilles, B. Lesigne, J. Sutton","doi":"10.1039/C29710000749","DOIUrl":"https://doi.org/10.1039/C29710000749","url":null,"abstract":"Three absorptions associated with the electron (925 nm), the positive ion (625 nm), and an unidentified species (300 nm) have been observed on pulse radiolysis of dimethyl sulphoxide.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"16 1","pages":"749-750"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75156676","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}
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