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Journal of The Chemical Society C: Organic最新文献

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Polyhalogenoaromatic compounds. Part XIX. Metal–halogen exchange reactions of n-butyl-lithium with tetrabromo-4-pyridyl and tetrachloro-2-pyridyl derivatives Polyhalogenoaromatic化合物。第十九一部分。正丁基锂与四溴-4-吡啶和四氯-2-吡啶衍生物的金属-卤素交换反应
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710001227
D. Berry, B. Wakefield, J. D. Cook
{"title":"Polyhalogenoaromatic compounds. Part XIX. Metal–halogen exchange reactions of n-butyl-lithium with tetrabromo-4-pyridyl and tetrachloro-2-pyridyl derivatives","authors":"D. Berry, B. Wakefield, J. D. Cook","doi":"10.1039/J39710001227","DOIUrl":"https://doi.org/10.1039/J39710001227","url":null,"abstract":"The reaction of n-butyl-lithium with tetrabromo-4-methoxypyridine, tetrabromo-4-dimethylaminopyridine, and tetrabromo-4-piperidinopyridine led to the corresponding tribromo-3-pyridyl-lithium derivatives. When heated in the presence of furan, tribromo-4-methoxy-3-pyridyl-lithium gave an adduct of 5,6-dibromo-4-methoxy-2-pyridine. The reaction of n-butyl-lithium with tetrachloro-6-methoxypyridine, tetrachloro-6-dimethylamino-pyridine, tetrachloro-6-pyrrolidinopyridine and tetrachloro-6-piperidinopyridine led to the corresponding trichloro-4-pyridyl-lithium derivatives. When heated in the presence of furan, each of these lithium compounds gave only one of the two possible pyridyne adducts; evidence is presented that the 2-substituted 3-pyridyne was involved in each case. Factors governing the position of metal–halogen exchange in polyhalogeno-benzenes and -pyridines are discussed.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"21 1","pages":"1227-1231"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80578336","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: 5
Calciferol and its relatives. Part XV. The preparation of des-AB-cholest-8-ene-8-carbaldehyde {1?-[(1R)-1,5-dimethylhexyl]-3a?,6,7,7a?-tetrahydro-7a?-methylindane-4-carbaldehyde} and 9?-chloro-des-AB-cholestan-8-one {5?-chloro-1?-[(1R)-1,5-dimethylhexyl]-7a?-methyl-trans-perhydroindan-4-one} 钙化醇及其近亲。十五。des- ab -胆-8-烯-8-醛{1?-[(1R)-1,5-二甲基己基]-3a?，6,7,7a?-四氢-7a?的制备-甲基林丹-4-乙醛}和9?-chloro-des-AB-cholestan-8-one {5 -chloro-1 ? - [(1 r) 1, 5-dimethylhexyl] 7 ?-methyl-trans-perhydroindan-4-one}
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/j39710002955
P. Littlewood, B. Lythgoe, A. Saksena
{"title":"Calciferol and its relatives. Part XV. The preparation of des-AB-cholest-8-ene-8-carbaldehyde {1?-[(1R)-1,5-dimethylhexyl]-3a?,6,7,7a?-tetrahydro-7a?-methylindane-4-carbaldehyde} and 9?-chloro-des-AB-cholestan-8-one {5?-chloro-1?-[(1R)-1,5-dimethylhexyl]-7a?-methyl-trans-perhydroindan-4-one}","authors":"P. Littlewood, B. Lythgoe, A. Saksena","doi":"10.1039/j39710002955","DOIUrl":"https://doi.org/10.1039/j39710002955","url":null,"abstract":"Several des-AB-cholestane derivatives, carrying oxygen functions at position 8 or 9, or both, are prepared from des-AB-cholest-8-ene or from des-AB-cholestane-8β,9α-diol. They include the two title compounds, required for the total synthesis of tachysterol3 and precalciferol3, respectively.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"181 1","pages":"2955"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80684952","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: 3
Acenaphthene. Part II. The preparation of 3,4-diaminonaphthalene-1,8-dicarboxylic anhydride (3,4-diaminonaphthalic anhydride) and derivatives 苊。第二部分。3,4-二氨基萘-1,8-二羧酸酐(3,4-二氨基萘酸酐)及其衍生物的制备
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710003891
L. A. Jones, H. K. Kim, R. Watson
{"title":"Acenaphthene. Part II. The preparation of 3,4-diaminonaphthalene-1,8-dicarboxylic anhydride (3,4-diaminonaphthalic anhydride) and derivatives","authors":"L. A. Jones, H. K. Kim, R. Watson","doi":"10.1039/J39710003891","DOIUrl":"https://doi.org/10.1039/J39710003891","url":null,"abstract":"The synthesis of the previously unknown 3,4-diaminonaphthalene-1,8-dicarboxylic anhydride (7) is reported. Support for the structural assignment is found in an alternate synthetic route to the dialkyl esters (16) and (17). All new compounds are characterized by elemental analysis and i.r. and n.m.r. spectroscopy.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"238 1","pages":"3891-3893"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79706851","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: 1
Benzopyrones. Part III. Synthesis and mass spectra of some oxopyranobenzoxazolecarboxylic esters Benzopyrones。第三部分。氧吡喃苯并恶唑羧酸酯的合成及质谱分析
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710001482
G. Barker, G. P. Ellis
{"title":"Benzopyrones. Part III. Synthesis and mass spectra of some oxopyranobenzoxazolecarboxylic esters","authors":"G. Barker, G. P. Ellis","doi":"10.1039/J39710001482","DOIUrl":"https://doi.org/10.1039/J39710001482","url":null,"abstract":"The preparation of ethyl 8-amino-7-hydroxy-4-oxochromen-2-carboxylate (1) and two of its isomers from the corresponding nitro-compounds is described. Cyclization of the Schiff bases from these amino-phenols and various nitrobenzaldehydes gave the oxopyranobenzoxazoles (4)–(7). The amino-phenols (1) and (2) were also cyclized by use of phosgene or thiophosgene to give the corresponding oxo- or thioxo-oxazoles (8)–(11). The mass spectra of 2-phenylbenzoxazole (12) and benzoxazol-2(3H)-one (13) are interpreted. A similar study of the pyranobenzoxazoles (4)–(11) showed fragmentation patterns characteristic of chromones rather than of benzoxazoles.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"349 1","pages":"1482-1484"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79718007","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: 5
Metallation of 1,3-bistrifluoromethylbenzene and NN-dimethyl-3,5-bistrifluoromethylaniline 1,3-双三氟甲基苯和nn -二甲基-3,5-双三氟甲基苯胺的金属化
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710003305
D. E. Grocock, T. K. Jones, G. Hallas, J. Hepworth
{"title":"Metallation of 1,3-bistrifluoromethylbenzene and NN-dimethyl-3,5-bistrifluoromethylaniline","authors":"D. E. Grocock, T. K. Jones, G. Hallas, J. Hepworth","doi":"10.1039/J39710003305","DOIUrl":"https://doi.org/10.1039/J39710003305","url":null,"abstract":"The metallation of 1,3-bistrifluoromethylbenzene with the n-butyl-lithium–NNN′N′-tetramethylethylenediamine complex occurs essentially only at the 2-position, but with n-butyl-lithium alone a mixture of products results. n-Butyl-lithium reacts with NN-dimethyl-3,5-bistrifluoromethylaniline mainly at the 4-position. Treatment of 3,5-bistrifluoromethylaniline with aqueous bromine gives a dibromo-compound. Structures are assigned on the basis of 1H n.m.r. data.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"203 1","pages":"3305-3308"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83426023","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: 10
Nuclear magnetic resonance evidence regarding the stereochemistry of some cyanoindanylidene compounds 关于某些氰吲哚基化合物立体化学的核磁共振证据
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710001583
A. Bahl, W. Kemp
{"title":"Nuclear magnetic resonance evidence regarding the stereochemistry of some cyanoindanylidene compounds","authors":"A. Bahl, W. Kemp","doi":"10.1039/J39710001583","DOIUrl":"https://doi.org/10.1039/J39710001583","url":null,"abstract":"The n.m.r. spectra of a series of indane derivatives with an exocyclic double bond have been examined, and the stereochemistry of such compounds deduced from chemical-shift data. Stereochemical assignments extend, and are different from, those previously reported.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"24 1","pages":"1583-1585"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84654515","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: 4
1,2,3-Benzothiadiazoles. Part IV. The rearrangement of diazonium salts derived from 7-aminobenzothiazoles 1、2、3-Benzothiadiazoles。第四部分:7-氨基苯并噻唑类重氮盐的重排
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710003642
E. Haddock, P. Kirby, A. Johnson
{"title":"1,2,3-Benzothiadiazoles. Part IV. The rearrangement of diazonium salts derived from 7-aminobenzothiazoles","authors":"E. Haddock, P. Kirby, A. Johnson","doi":"10.1039/J39710003642","DOIUrl":"https://doi.org/10.1039/J39710003642","url":null,"abstract":"The rearrangement of the diazonium salts of 7-aminobenzothiazoles to derivatives of 7-amino-1,2,3-benzothiadiazole is shown to proceed through 7-acylamino-1,2,3-benzothiadiazoles.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"11 1","pages":"3642-3644"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87322583","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: 3
Synthesis of corydalactam 延胡索内酰胺的合成
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710000999
T. Kametani, M. Ihara*
{"title":"Synthesis of corydalactam","authors":"T. Kametani, M. Ihara*","doi":"10.1039/J39710000999","DOIUrl":"https://doi.org/10.1039/J39710000999","url":null,"abstract":"","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"48 3 1","pages":"999-1000"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84706805","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: 5
The acetolysis and benzolysis of some carbohydrate oxirans 一些碳水化合物氧化物的乙酰和苯解
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710001515
J. Buchanan, J. Conn, A. Edgar, R. Fletcher
{"title":"The acetolysis and benzolysis of some carbohydrate oxirans","authors":"J. Buchanan, J. Conn, A. Edgar, R. Fletcher","doi":"10.1039/J39710001515","DOIUrl":"https://doi.org/10.1039/J39710001515","url":null,"abstract":"A cyclic acyloxonium ion is formed as an intermediate when a carbohydrate oxiran bearing a vicinal trans-acyloxy-group is heated in acetic acid. In the presence of water the cyclic ion yields a cis-monoester. Under anhydrous conditions, using acetic acid or molten benzoic acid as solvent, three products are generally formed, corresponding to nucleophilic attack at each of the three carbon atoms of the cyclic ion. Possible mechanisms are discussed in the light of other published work on the properties of acyloxonium ions derived from polyols.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"126 1","pages":"1515-1521"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88161478","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: 3
Partially fluorinated heterocyclic compounds. Part IX. The syntheses of 4,5,6,7-tetrafluorobenzo[b]furan and 4,5,6,7-tetrafluoro-2-phenylbenzo[b]furan by a new cyclisation reaction, and the attempted syntheses of related compounds by conventional methods 部分氟化杂环化合物。第九部分。用新的环化反应合成4,5,6,7-四氟苯并[b]呋喃和4,5,6,7-四氟-2-苯基苯并[b]呋喃，并尝试用常规方法合成相关化合物
Journal of The Chemical Society C: Organic Pub Date : 1971-01-01 DOI: 10.1039/J39710003596
G. Brooke, W. Musgrave, T. R. Thomas
{"title":"Partially fluorinated heterocyclic compounds. Part IX. The syntheses of 4,5,6,7-tetrafluorobenzo[b]furan and 4,5,6,7-tetrafluoro-2-phenylbenzo[b]furan by a new cyclisation reaction, and the attempted syntheses of related compounds by conventional methods","authors":"G. Brooke, W. Musgrave, T. R. Thomas","doi":"10.1039/J39710003596","DOIUrl":"https://doi.org/10.1039/J39710003596","url":null,"abstract":"4,5,6,7-Tetrafluorobenzo[b]furan and 4,5,6,7-tetrafluoro-2-phenylbenzo[b]furan have been prepared by the sodium hydride-induced cyclisation of (pentafluorophenyl)acetaldehyde and 2-(pentafluorophenyl) acetophenone, respectively. Attempted cyclisation of ethyl (2-ethoxycarbonyl-3,4,5,6-tetrafluorophenoxy) fluoroacetate and of 2′,3′,4′,5′,6′-pentafluoro-2-hydroxyacetophenone both failed.","PeriodicalId":17245,"journal":{"name":"Journal of The Chemical Society C: Organic","volume":"51 1","pages":"3596-3599"},"PeriodicalIF":0.0,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88457591","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: 7
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