Nitrilohexaphosphonitrilic chloride P6N7Cl9 has a condensed ring structure with comparatively weak central bonds, one of which is broken on reaction with dimethylamine.
硝基六磷二腈氯P6N7Cl9为缩合环结构，中心键较弱，其中一个键在与二甲胺反应时断裂。
{"title":"Crystal structure and chemistry of nitrilohexaphosphonitrilic chloride","authors":"W. Harrison, R. T. Oakley, N. Paddock, J. Trotter","doi":"10.1039/C29710000357","DOIUrl":"https://doi.org/10.1039/C29710000357","url":null,"abstract":"Nitrilohexaphosphonitrilic chloride P6N7Cl9 has a condensed ring structure with comparatively weak central bonds, one of which is broken on reaction with dimethylamine.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"59 1","pages":"357-358"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76811457","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 synthesis of 8,2′-thioanhydroadenosine illustrates a new general route to the synthesis of 8,2′-thioanhydropurine nucleosides.
8,2′-硫代氢腺苷的合成为合成8,2′-硫代氢嘌呤核苷提供了一条新的通用途径。
{"title":"Novel synthesis of 8,2′-thioanhydropurine nucleosides","authors":"K. K. Ogilvie, L. Slotin","doi":"10.1039/C29710000890","DOIUrl":"https://doi.org/10.1039/C29710000890","url":null,"abstract":"The synthesis of 8,2′-thioanhydroadenosine illustrates a new general route to the synthesis of 8,2′-thioanhydropurine nucleosides.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"58 1","pages":"890-890"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76960136","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}
In contradiction to an earlier report we have found that chromium pentoxide etherate solution oxidises tetraphenylcyclopentadienone to a known keto-lactone, which can be obtained more efficiently by chromic acid oxidation; we have been unable to prepare the earlier claimed peroxide.
{"title":"Oxygen insertion reactions. A re-investigation of the reaction of chromium pentoxide etherate with tetracyclone","authors":"J. Baldwin, J. Swallow, H. Chan","doi":"10.1039/C29710001407","DOIUrl":"https://doi.org/10.1039/C29710001407","url":null,"abstract":"In contradiction to an earlier report we have found that chromium pentoxide etherate solution oxidises tetraphenylcyclopentadienone to a known keto-lactone, which can be obtained more efficiently by chromic acid oxidation; we have been unable to prepare the earlier claimed peroxide.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"17 1","pages":"1407-1408"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82583706","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}
Chemical and spectral evidence for the 1β,3β-dihydroxyolean-18-ene structure of anagadiol (I), a new triterpene isolated from the aerial parts of Salvia Broussonetii Benth., are reported.
{"title":"Constituents of labiatae. Anagadiol, a new triterpene from Salvia Broussonetii benth","authors":"Antonio G. González, J. Bretón, B. Fraga","doi":"10.1039/C29710000567","DOIUrl":"https://doi.org/10.1039/C29710000567","url":null,"abstract":"Chemical and spectral evidence for the 1β,3β-dihydroxyolean-18-ene structure of anagadiol (I), a new triterpene isolated from the aerial parts of Salvia Broussonetii Benth., are reported.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"94 1","pages":"567-568"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81776570","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}
Lactones (Ia–c) undergo a ready, completely stereoselective thermal reaction with 1,1-dimethoxyethylene giving substituted α-methylene lactones in good yield.
内酯(Ia-c)与1,1-二甲氧基乙烯发生完全立体选择性热反应，生成取代α-亚甲基内酯，收率高。
{"title":"Synthesis of substituted α-methylene lactones: determination of product structure by X-ray crystallography","authors":"O. Chapman, C. L. Mcintosh, J. Clardy","doi":"10.1039/C29710000384","DOIUrl":"https://doi.org/10.1039/C29710000384","url":null,"abstract":"Lactones (Ia–c) undergo a ready, completely stereoselective thermal reaction with 1,1-dimethoxyethylene giving substituted α-methylene lactones in good yield.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"15 1","pages":"384-385"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82084011","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}
G(CO) from γ-irradiated gaseous carbon dioxide at 50 ± 1 °C showed a marked increase with density increase above 0·2 g/ml, owing to the increased probability of geminate recombination of ion pairs at high densities.
{"title":"γ-Radiolysis of gaseous carbon dioxide at high densities","authors":"M. Yoshimura, M. Chosa, Y. Soma, M. Nishikawa","doi":"10.1039/C29710000980","DOIUrl":"https://doi.org/10.1039/C29710000980","url":null,"abstract":"G(CO) from γ-irradiated gaseous carbon dioxide at 50 ± 1 °C showed a marked increase with density increase above 0·2 g/ml, owing to the increased probability of geminate recombination of ion pairs at high densities.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"42 1","pages":"980-981"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82333141","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}
A study of internal rotation in ortho-bis(dichloromethyl)benzenes by 1H n.m.r. spectroscopy shows the presence of locked conformers on the n.m.r. time scale when these substituents are flanked on one or both sides by chlorine of additional dichloromethyl groups, and that in cases where a chlorine is substituted on both sides of two ortho-bis(dichloromethyl)groups ΔG‡ at Tc is 17·4–17·7 kcal mol–1.
{"title":"Hindered rotation in ortho-bis(dichloromethyl)benzenes","authors":"V. Mark, V. A. Pattison","doi":"10.1039/C29710000553","DOIUrl":"https://doi.org/10.1039/C29710000553","url":null,"abstract":"A study of internal rotation in ortho-bis(dichloromethyl)benzenes by 1H n.m.r. spectroscopy shows the presence of locked conformers on the n.m.r. time scale when these substituents are flanked on one or both sides by chlorine of additional dichloromethyl groups, and that in cases where a chlorine is substituted on both sides of two ortho-bis(dichloromethyl)groups ΔG‡ at Tc is 17·4–17·7 kcal mol–1.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"18 1","pages":"553-554"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78781470","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}
Tetrabenzylhafnium has a molecular structure identical to that of tetrabenzylzirconium with a distorted tetrahedral arrangement of ligands around the metal and angles at the methylene carbons of around 90°; tetrabenzyltitanium shows a similar distortion from a tetrahedral arrangement but the angle M–CH2–C now averages 103°; an interacation between the aromatic ring and the transition-metal atoms is suggested to account for the distortion; in contrast, tetrabenzyltin has a perfectly regular structure.
{"title":"The crystal and molecular structures (at –40 °C) of the tetrabenzyls of titanium, hafnium, and tin","authors":"G. Davies, J. Jarvis, B. T. Kilbourn","doi":"10.1039/C29710001511","DOIUrl":"https://doi.org/10.1039/C29710001511","url":null,"abstract":"Tetrabenzylhafnium has a molecular structure identical to that of tetrabenzylzirconium with a distorted tetrahedral arrangement of ligands around the metal and angles at the methylene carbons of around 90°; tetrabenzyltitanium shows a similar distortion from a tetrahedral arrangement but the angle M–CH2–C now averages 103°; an interacation between the aromatic ring and the transition-metal atoms is suggested to account for the distortion; in contrast, tetrabenzyltin has a perfectly regular structure.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"11 1","pages":"1511-1512"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78900455","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}
{"title":"Photo-oxidation of amines: a reply","authors":"M. Fisch, J. Gramain, J. Olesen","doi":"10.1039/C29710000663","DOIUrl":"https://doi.org/10.1039/C29710000663","url":null,"abstract":"","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"17 1","pages":"663-663"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76099214","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}
F. Bellamy, Luis Guillermo Ruiz Barragan, J. Streith
Sensitization of the pyridine N-oxide triplet state increases the extent of oxygen transfer reactions, whereas quenching with a copper salt in aqueous solution increases the extent of photorearrangement.
吡啶n -氧化物三重态的敏化增加了氧转移反应的程度，而在水溶液中用铜盐淬火则增加了光重排的程度。
{"title":"Photochemistry of pyridine N-oxides. Chemical properties of single and triplet excited states","authors":"F. Bellamy, Luis Guillermo Ruiz Barragan, J. Streith","doi":"10.1039/C29710000456","DOIUrl":"https://doi.org/10.1039/C29710000456","url":null,"abstract":"Sensitization of the pyridine N-oxide triplet state increases the extent of oxygen transfer reactions, whereas quenching with a copper salt in aqueous solution increases the extent of photorearrangement.","PeriodicalId":17278,"journal":{"name":"Journal of The Chemical Society D: Chemical Communications","volume":"1 1","pages":"456-456"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86925668","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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